Go Back   Team-BHP > Around the Corner > Shifting gears > Gadgets, Computers & Software


Reply
 
Thread Tools Search this Thread
Old 30th October 2009, 19:15   #1861
Team-BHP Support
 
Samurai's Avatar
 
Join Date: Jan 2005
Location: B'lore-Manipal
Posts: 22,233
Thanked: 13,978 Times
Default

Quote:
Originally Posted by kaushik_s View Post
Samurai, you still have time. Transform over to the dark side or embrace Canon
What is the cheapest weather sealed (body+standard zoom) cost with Canon?
Samurai is offline   Reply With Quote
Old 30th October 2009, 19:46   #1862
Senior - BHPian
 
Join Date: Feb 2006
Location: BLR
Posts: 2,222
Thanked: 10 Times
Default

Yeah maven, its common.

Canon 40D metering seems pretty much on the dot compared to some of the older canon bodies I handled in the past (friends) but I could be wrong as this is my first body.

Quote:
Originally Posted by kaushik_s View Post
Samurai, you still have time. Transform over to the dark side or embrace Canon
May the power be with you.
Quote:
Originally Posted by Samurai View Post
What is the cheapest weather sealed (body+standard zoom) cost with Canon?
Hehe, I see what you guys did there!!

*pulls up a chair to watch the fun*
s0uljah is offline   Reply With Quote
Old 31st October 2009, 12:55   #1863
Senior - BHPian
 
gd1418's Avatar
 
Join Date: May 2006
Location: Gurgaon
Posts: 3,578
Thanked: 655 Times
Default

The Sigma APO HSM OS lenses are equally comparable to Canon USM IS or Nikon VR SWM glasses and cheaper too.

Quote:
Originally Posted by livyodream View Post
The only not-so-good feature about sigma lens is it is a bit slow and noisy COMPARED to Canon lens. Canon has USM (ultra sonic motor) which makes it quick and noiseless, which also makes it costlier.
gd1418 is offline   Reply With Quote
Old 31st October 2009, 13:31   #1864
Senior - BHPian
 
kaushik_s's Avatar
 
Join Date: Sep 2006
Location: Bangalore
Posts: 1,064
Thanked: 148 Times
Default

Quote:
Originally Posted by Samurai View Post
What is the cheapest weather sealed (body+standard zoom) cost with Canon?
It's 1700$ currently, but expect it to come down to 1300-1400$ soon.
But weather sealing can't be the only criteria to buy a camera system, right? For me it's availability of the lenses that I can put my hands on. And I've to tell one thing, I got some really mouth watering deals when I bought few of my lenses( talking about the 2nd hand one). For slight drizzles and rains I use a rain cover with my not so weather sealed cameras (350d has no weather sealing and 40D is sealed only for shutter and battery compartment). Cheap and works for me, yeah little awkward it looks but that's ok.

Last edited by kaushik_s : 31st October 2009 at 13:32.
kaushik_s is offline   Reply With Quote
Old 3rd November 2009, 04:16   #1865
BHPian
 
Join Date: Mar 2008
Location: Melbourne
Posts: 27
Thanked: 0 Times
Default

Quote:
Originally Posted by kaushik_s View Post
It's 1700$ currently, but expect it to come down to 1300-1400$ soon.
But weather sealing can't be the only criteria to buy a camera system, right? For me it's availability of the lenses that I can put my hands on. And I've to tell one thing, I got some really mouth watering deals when I bought few of my lenses( talking about the 2nd hand one). For slight drizzles and rains I use a rain cover with my not so weather sealed cameras (350d has no weather sealing and 40D is sealed only for shutter and battery compartment). Cheap and works for me, yeah little awkward it looks but that's ok.
Point of weather sealing is not only for rain but for the fact DUST/MOISTURE etc. Its not uncommon to see people doing rally shots falling in pit of mud and body/lens combo getting a good wash in mud, no rain cover protects you there. This is one of the main reasons Pentax is still in market since almost all of upper pentax segment is Weather Sealed and those DA and Ltd`s just make me go drooling, but i can`t use any on my nikons

Personally i had beer spilled on my D3+70-200mm, i just washed it under tap and its all fine.
it_inspector is offline   Reply With Quote
Old 3rd November 2009, 05:28   #1866
BHPian
 
Join Date: Mar 2008
Location: Melbourne
Posts: 27
Thanked: 0 Times
Default

Quote:
Originally Posted by gd1418 View Post
The Sigma APO HSM OS lenses are equally comparable to Canon USM IS or Nikon VR SWM glasses and cheaper too.
There is a huge reason why Sigma is cheaper than almost everyone. Sigma has the worse quality control. GOOGLE can show you the issues with Front/Back focus issues on Sigma lenses. Its more like the luck. You might get a lens without any issues but then again its based on luck. Compared to Canon and Nikon, the only issues i had in my 10+yrs of photography (been doing since i was 13yrs old) was/is Nikon 35mm 1.8Dx, it has front/back focus issues and Nikon 200mm f4 Micro, god awful lens, beautiful reach and macro capability but impossible to use without a tripod and was designed to be used handheld. Finally Canon 50mm f1.8 Mk2, nothing bad as this lens, worst quality ever, but still good enough for regular shoot.

Everyone is going to take me wrong in sense to Canon 50mm f1.8 mk2. So i am going to layout the comparison in terms of quality and quality only. I bet Rs.10L you can run a Safari over Nikon 50mm f1.8/Zeiss f1.4 and these can still be used after a bit of cleaning and removing filter ring. Canon, well just drop it from 5feet and it comes out in 2 parts. Its coming from experience, if required i can put pictures of a D3+50mm after being run over by a 2 tonne vehicle.


Quote:
Originally Posted by livyodream View Post
Canon has USM (ultra sonic motor) which makes it quick and noiseless, which also makes it costlier.
I respectfully disagree. All of the lenses manufactured for crop sensors (EFS in canon, DX in Nikon and DC in Sigma) feature USM/SWM/HSM motors (same thing different names) and it is one of the reason why these are cheaper to manufacture. Canon lenses are expensive because of Apeture system is in the lens and it costs quite a bit since its not solely based on electromagnets but is more in the sense of advanced actuators.


Quote:
Originally Posted by neel385 View Post
A lot is made up about the zoom capabilities of todays P&Ss....snip....
True but always start at a P&S level and learn to COMPOSE and then start fiddling with manual controls, once comfortable jump into BRIDGE cameras section and try out OLDER bridge cameras (S9500, S9600) and finally come to DSLR market. That is the best and simplest way. Otherwise its very easy to get demotivated when just starting out with a DSLR and having to do plethora of things and then still finding your image is just not good enough because you didn`t compose properly and now have to CROP in order to salvage it. CROP is not a good thing to get used to, reason being you are wasting pixels each time you crop even slightly.


Quote:
Originally Posted by livyodream View Post
Im not into landscape or nature photography though , my interests are in astrophotography. So the settings are difficult compared to other fields.
I respectfully disagree. Walking 15kms at 2am in chilly winter with 55kg of camera equipment on my back to take shot. That is the low resolution version, if needed i can provide full resolution version. Its actually a mix of 16 shots.

Yes Astro photography needs more time and sittings but truthfully no one can say one field of photography is difficult compared to others. I personally do Landscapes, Fashion, Portraits, Product Shoots and each have there own issues and need appropriate equipment.

For example, being in Astrophotography you are stuck in a field if you want clear night shots like "Milky Way","Horse Head Nebula", you need a wide angle lens, something like Sigma 10-20mm, and on the other hand if you want to take images of distant galaxies or planets, you will need 300mm f2.8/f4`s and sometimes even 400mm/500mm primes and then comes stacking, same shot again and again and again. I have seen few amazing images with 6x15minx15min shots. For Portrait, i can get by just 85mm f1.2 and 50mm f1.2 but i need so many lights/strobes and its not fun but the end result is simply amazing. For product shots, err... well just watch Hasselblad videos on YOUTUBE with Bugati Veryon shoot and you will realise the time spent.


Quote:
Originally Posted by livyodream View Post
I can show you what a DSLR with 70-300 lens can do .
And i can show you what a Nikon 200-400mm f4 can do, or for that matter Canon 400mm f2.8 can do.

What`s your point??? I am asking since you cannot compare a camera technique and final image quality just by price and reach.

Quote:
Originally Posted by somspaple View Post
hi firends,

i have been using canon s3 is .....snip.....
If you have not grown out of S3Is yet then there is no real reason to buy a new camera unless you specifically want higher pixels. Then source S5is or Sx series from Canon. But ideally you don`t need to get another camera if you havn`t grown out of s3is yet. Hell i still use my Canon A80 from a decade ago.


Quote:
Originally Posted by SPARKled View Post
With these specifications and some excellent 'to dwell upon' suggestions from abhijitaparadh, a simple P&S with some manual controls is best suited for you. You dont have to spend a bomb on a simple P&S to make future upgrades financially prohibitive. Get a nice small camera, shoot some pics, improve your composition, shooting and post processing skills and take the plunge to a DSLR later on if required.
BEST reply so far!!!!

Read it again and again till it sinks in


Quote:
Originally Posted by s0uljah View Post
Does anyone have pricing for the Speedlite 430ex in our markets? What are the alternatives (read cheap but performers) Sells for about 250$ US online.
Try finding Achiever Strobes, they have the issue of slow recycling but otherwise are fantastic and at 10th of the cost of Canon/Nikon alternatives. I still use mine with my D3. Only real issue with Achievers are slowflash recycling speeds, but if you are not bouncing the light off cealings at full power or manual, then its not a big deal. Also read Strobist Blog and links, it will amaze you how much you can do with cheap strobes and how to efficiently use them, rather than buying expensive Canon/Nikon strobes and paying a hefty premium for parts.


Quote:
Originally Posted by jaysmokesleaves View Post
Unless the person purchasing the DSLR has a few fingers missing....snip....

I now feel almost drugged by my camera and im enjoying learning.
But how do you actually determine that you like photography ??? no point buying a dslr and realising you don`t like it and loose money.

I know how you feel about the drugs, i am myself a camera junkie


Quote:
Originally Posted by gd1418 View Post
Going by your logic, a decent P&S costs nearly the same as a very basic DSLR with kit lens.

My comparison might not be correct or convey what I'm trying to say, but if someone has to buy a 60+K two-wheeler, then why not a Nano?
Because NANO is a people mover while a 2 wheeler is meant for speed (assuming the 60+ category).

I don`t get the point comparing DECENT P&S to BASIC DSLR. Its like comparing best sports car to BASIC formula one car. Its not a direct comparison. Please compare DECENT P&S to DECENT DSLR and basic P&S to BASIC DSLR and you will realise the real difference,


Quote:
Originally Posted by neel385 View Post
In outdoor photography, to the best of my limited knowledge (perhaps Rudrada will correct/improve upon it), the best photographs are those which recreate the normal human field of vision. The 50 mm comes closest.
I respectfully disagree. Field of View or FOV or human eye is almost Double than a normal lens or a 50mm lens from pretty much any manufacturer.

Quote:
Originally Posted by neel385 View Post
A SLR will give you better pics as compared to a compact because of the following reasons:

1. Pixel Density : Since a compact will have a smaller sensor as compared to a SLR, for the same resolution, the pixel density of a compact will be more. As a result of which, there will be a loss in the ability to capture detail.

2. Quality of Optics : The lens of a SLR will be better than that of a compact and will also generally be faster. Both these will affect your photographs.
Again, I respectfully dis-

1. Once, you jump into advanced research and optics, you will realise, HIGHER the PIXEL density, LOWER is the wasted space on the sensor (GOOGLE FOVEON SENSOR), hence HIGHER ability to capture detail.

2. One word, LX3, it has a f2.0 lens while i don`t beleive any of the kit lenses are above f3.5, please correct me if i am wrong. Only cheap faster lens that an average person can get is 50mm f1.8`s. Otherwise there are Zeiss and LEica lenses available that go upto f0.9 but they are hardly affordable for an averagre person. To be precise even with a huge budget you cannot afford more than f2.8 lenses for DSLR`s, biggest reason being these are not manufactured, bar Canon 200mm f1.8

Now why ars DSLR`s better than P&S:-

1. Well first of all CONTROLS, all of the DSLR`s (Except Leica S2) have more controls directly with dedicated buttons, and all have them through menus while those controls are almost missing in P&S.
2. ISO, DSLR`s can produce pictures usable at ISO`s that NO P&S can achieve.
3. Burst rate, all DSLR have higher burst rate (FPS) than P&S`s (Except Casio Ex-f1)
4. Battery, DSLR`s have higher battery capacity and last way longer than any P&S
5. Lenses, this is the biggest benefit of a DSLR, you can change a lensaccording to your need. NO P&S CAN BE USED TO ACHIEVE THE RESULTS OF TILT-SHIFT OR PERSPECTIVE-CONTROL LENSES.


Quote:
Originally Posted by SPARKled View Post
Usually film has a much higher dynamic range than digital so atleast its much better than digital in this regard. For example I have never had washed out skies or over exposed whites with film. I have to be much more careful about these in digital.
Correct, but HDR can resolve that. And also Dynamic range is not an issue anymore, just try Fuji S5 and you know what i mean



Sorry guys, if i was rude anywhere, since everyone is putting so much info here for benefit of other, its only fair, i share my knowledge and experience to help others
it_inspector is offline   Reply With Quote
Old 3rd November 2009, 08:40   #1867
Team-BHP Support
 
Samurai's Avatar
 
Join Date: Jan 2005
Location: B'lore-Manipal
Posts: 22,233
Thanked: 13,978 Times
Default

Quote:
Originally Posted by kaushik_s View Post
For me it's availability of the lenses that I can put my hands on.
Well, Olympus does have some of the finest lenses. Checkout dpreview review of two of my lenses:

Olympus Zuiko Digital 50mm F2.0 Macro Lens Review: 4. Conclusion & samples: Digital Photography Review
Olympus Zuiko Digital ED 12-60mm 1:2.8-4.0 SWD Lens Review: 4. Conclusion & samples: Digital Photography Review

Quote:
Originally Posted by kaushik_s View Post
And I've to tell one thing, I got some really mouth watering deals when I bought few of my lenses( talking about the 2nd hand one).
My lenses weren't cheap, but I already own it. So, why change?


Quote:
Originally Posted by kaushik_s View Post
For slight drizzles and rains I use a rain cover with my not so weather sealed cameras (350d has no weather sealing and 40D is sealed only for shutter and battery compartment). Cheap and works for me, yeah little awkward it looks but that's ok.
Why compromise? I never worry of dust, water, humidity, moisture, fungus, etc. Never needed to clean the sensor either.
Samurai is offline   Reply With Quote
Old 3rd November 2009, 08:51   #1868
BHPian
 
bmw_m5_titus's Avatar
 
Join Date: Jun 2006
Location: kottayam
Posts: 178
Thanked: 4 Times
Default

Quote:
Originally Posted by livyodream View Post
Lets talk in terms of prices:
Canon SX10 IS MRP - 25000

DSLR - Canon EOS 1000D - 26000 (including 18-55mm IS lens costing 7K in the market)

With this you cannot expect a zoom but still sufficient in the initial stages. once you are well verse with the camera, you can upgrade to sigma 70-300 lens which costs approximately 11K whis is not only an amazing lens but also value for money.

26K+11K = happiness


I can show you what a DSLR with 70-300 lens can do .
With the 1000d you get the non IS lens, no?

And I too feel the Sigma 70-300, is slow and noisy, and the images lack sharpness.
The canon 55-250is or nikon 55-200vr are better options.

Last edited by bmw_m5_titus : 3rd November 2009 at 08:59.
bmw_m5_titus is offline   Reply With Quote
Old 3rd November 2009, 11:22   #1869
BHPian
 
SPARKled's Avatar
 
Join Date: Aug 2009
Location: Navi Mumbai
Posts: 926
Thanked: 294 Times
Default

Quote:
Originally Posted by it_inspector View Post

2. One word, LX3, it has a f2.0 lens while i don`t beleive any of the kit lenses are above f3.5, please correct me if i am wrong.
I dont believe that one can compare F2.0 of a P&S lens even for a high end one like the LX3 with that of a SLR lens.


Quote:
Originally Posted by it_inspector View Post
Correct, but HDR can resolve that. And also Dynamic range is not an issue anymore, just try Fuji S5 and you know what i mean .

But you cant keep bracketing shots to take a final HDR image where only 1 image is possible. I have used the S5 for a month and yes the S5 was better than the equivalent d200 and the Canons of its time, but still was not as good as film for dynamic range. I have not used any camera later than the D200 so cant comment if the newer sensors are any better in this regard.
SPARKled is offline   Reply With Quote
Old 3rd November 2009, 11:35   #1870
Team-BHP Support
 
Rudra Sen's Avatar
 
Join Date: Apr 2004
Location: Bangalore
Posts: 10,391
Thanked: 4,074 Times
Default

Quote:
Originally Posted by it_inspector View Post
I bet Rs.10L you can run a Safari over Nikon 50mm f1.8/Zeiss f1.4 and these can still be used after a bit of cleaning and removing filter ring. .
Is that a proper comparison? A budget lens worth 80$ with a 125$ and 550$ lens? Note: all these costs are my guesstimate and I don't think I'm way off the mark.
Quote:
Canon, well just drop it from 5feet and it comes out in 2 parts.
It’s pure regular plastic construction to offer a that kind of price and not a lens to use on battlefields.
Quote:
Its coming from experience, if required i can put pictures of a D3+50mm after being run over by a 2 tonne vehicle.
Not a good experience must say. Thank god for having an expensive magnesium alloy body.
Quote:
Canon lenses are expensive because of Apeture system is in the lens.
Not very clear here. Are you talking about previous Canon FD lens?
Quote:
I respectfully disagree. Field of View or FOV or human eye is almost Double than a normal lens or a 50mm lens from pretty much any manufacturer.
The human field of view is about 180 degrees by 120 degrees plus minus. And I suppose when we're talking about normal lens here, it’s for full frame as 24/36.
A normal lens produces a field of view that is similar to human vision. The diagonal of the image plane is typically used as the reference for field of view determination. A normal lens has a focal length that is approximately equal to the diagonal measurement of the image plane. When the focal length is equal to the diagonal measurement it produces a diagonal field of view of approximately 53degree which is similar to human vision.

For 35mm film (24/36) the diagonal measurement is 43.27mm (roughly). 50mm is close to this measurement so it is considered a normal lens.
A 50mm lens produces a 47degree diagonal field of view that is close to 53 degree.

Though human field of view is about 180 degree by 120 degree, we cannot cover that area in one go. It’s our brain that computes and gives us an apparent vision. A very simple test can be done by covering or closing one eye. Another reason for not to cover 180 degree is human’s nose bridge.
Rudra Sen is offline   Reply With Quote
Old 3rd November 2009, 11:35   #1871
Team-BHP Support
 
tsk1979's Avatar
 
Join Date: Feb 2005
Location: New Delhi
Posts: 22,913
Thanked: 15,576 Times
Default

Quote:
Originally Posted by SPARKled View Post
I dont believe that one can compare F2.0 of a P&S lens even for a high end one like the LX3 with that of a SLR lens.
SLR lenses can be had from as little as 100$ to 10000$ plus.
So while the LX3 may not compare well to the 10000$ lens, it can nicely compete with budget SLR lenses.
tsk1979 is offline   Reply With Quote
Old 3rd November 2009, 12:04   #1872
BHPian
 
SPARKled's Avatar
 
Join Date: Aug 2009
Location: Navi Mumbai
Posts: 926
Thanked: 294 Times
Default

Quote:
Originally Posted by tsk1979 View Post
SLR lenses can be had from as little as 100$ to 10000$ plus.
So while the LX3 may not compare well to the 10000$ lens, it can nicely compete with budget SLR lenses.
Yes probably you can at base ISOs and good light but anything beyond ideal conditions, cant compare even to a base DSLR.

Quote:
Everyone is going to take me wrong in sense to Canon 50mm f1.8 mk2. So i am going to layout the comparison in terms of quality and quality only. I bet Rs.10L you can run a Safari over Nikon 50mm f1.8/Zeiss f1.4 and these can still be used after a bit of cleaning and removing filter ring. Canon, well just drop it from 5feet and it comes out in 2 parts. Its coming from experience, if required i can put pictures of a D3+50mm after being run over by a 2 tonne vehicle
I have the Nikon 50 1.8 and the 1.4, though a 1.4 is better in build to the 1.8, neither is good enough to survive an Alto runover forget a Safari. The Zeiss I have no idea about.

Last edited by SPARKled : 3rd November 2009 at 12:08.
SPARKled is offline   Reply With Quote
Old 3rd November 2009, 12:17   #1873
Team-BHP Support
 
Jaggu's Avatar
 
Join Date: May 2004
Location: Bangalore
Posts: 17,647
Thanked: 7,184 Times
Default

You guys are too much, who will let a car run over lenses! I get peeved even with minor scratch's on the hood!

But one thing i have learned with photography is, money talks! atleast in the equipment side. The difference very evident once you view the shots on a big apple screen
Jaggu is online now   Reply With Quote
Old 3rd November 2009, 12:41   #1874
Senior - BHPian
 
rkbharat's Avatar
 
Join Date: Sep 2006
Location: Gurgaon/New Delhi
Posts: 1,590
Thanked: 606 Times
Default

Just a re-assessment and I realized that both 500D and D90 i was targeting are too far from my budget for at-least 2 years.

Not sure what to do, should I stay with my P&S or look out for some ultra budget DSLR.

How is Canon 1000D, it will cost me around 28K with 18-55mm IS Lens. Should I look for such options or wait to buy a better body.

This will be my first DSLR
rkbharat is offline   Reply With Quote
Old 3rd November 2009, 13:29   #1875
BHPian
 
Join Date: Mar 2008
Location: Melbourne
Posts: 27
Thanked: 0 Times
Default

Quote:
Originally Posted by bmw_m5_titus View Post
With the 1000d you get the non IS lens, no?

And I too feel the Sigma 70-300, is slow and noisy, and the images lack sharpness.
The canon 55-250is or nikon 55-200vr are better options.
Actually Sigma 70-300mm is better than both Canon 55-250is and Nikon 55-200mm VR. Altough all three are decent and respectable lenses.


Quote:
Originally Posted by SPARKled View Post
I dont believe that one can compare F2.0 of a P&S lens even for a high end one like the LX3 with that of a SLR lens.
Well we are comparing Lens Apeture and since its a FIXED size, it doesn`t change with lens type or reach.


Quote:
Originally Posted by SPARKled View Post
But you cant keep bracketing shots to take a final HDR image where only 1 image is possible. I have used the S5 for a month and yes the S5 was better than the equivalent d200 and the Canons of its time, but still was not as good as film for dynamic range. I have not used any camera later than the D200 so cant comment if the newer sensors are any better in this regard.
Actually you can do a HDR with a single image. Just goto Photoshop and save the original file with +1ev and -1ev and then import all three images into your choice of HDR software and go nuts with it.

Also i believe K7 can do in camera HDR so easier for someone just starting.

I have used D3/D3x/D700/D300 and dynamic range has improved vastly. You can check out sensor DxOMark Score can be checked here


Quote:
Originally Posted by Rudra Sen View Post
Is that a proper comparison? A budget lens worth 80$ with a 125$ and 550$ lens? Note: all these costs are my guesstimate and I don't think I'm way off the mark.
Yes, except Zeiss, honestly I should have left Zeiss out since its way expensive.

At current price for Canon 50mm f1.8 Mk2 is $180AUD and for Nikon 50mm f1.8 is $138AUD. So they fall in same bracket.


Quote:
Originally Posted by Rudra Sen View Post
It’s pure regular plastic construction to offer a that kind of price and not a lens to use on battlefields.
But we all do drop lenses by mistake and if you use something like a 50mm on d3/d3x it takes quite a beating.


Quote:
Originally Posted by Rudra Sen View Post
Not a good experience must say. Thank god for having an expensive magnesium alloy body.
Well, lets say, its kinda thing that makes grown men cry. Magnesium alloy gave in 10th of a second, all the buttons on D3were jammed, mirror broken, top and back lcd`s gone, body bent from front so both dials stuck. Insurance did cover it. I still have the D3 and plan to either sell it for parts when i come to india or simply put it in liquid resin and preserve it.


Quote:
Originally Posted by Rudra Sen View Post
Not very clear here. Are you talking about previous Canon FD lens?
I am talking about current EF mount. On EF mount there is no mechanical contact between DSLR body and lens and everthing happens electronically. Istead or traditional levers, Canon used EMD`s (Electromagnetic Diaphragm) which is also known as Electronic IRIS. Pretty much every other DSLR/SLR/TLR system utilises mechanical actuator in the body and control lens apeture via a lever coming from the lens.

Its not an expensive system but in the end every single Rupree makes a big different when manufacturers are selling millions of lenses. And cost is reduced for DSLR body since less parts are used and body is not few mm compact but that means all lenses are atleast 3-4mm longer and cost more.

Here`s an example or EMD from 50mm f1.8 Mk2.


Here`s the EMD installed on the controller from 50mm f1.8 Mk2. You can also see focussing motor and counter setup. Also focus switch is visibleon the side.


Here`s a controller make by Letus. Letus manufacturers 35mm DOF adapters for use on camcorders/handycams, there adapters use regular 35mm lenses. Since some people like to use lenses like canon 85mm f1.2 L, they need external setup to control apeture. This controller lets you choose the apeture required manually.


Quote:
Originally Posted by Rudra Sen View Post
The human field of view is about 180 degrees by 120 degrees plus minus. And I suppose when we're talking about normal lens here, it’s for full frame as 24/36.
A normal lens produces a field of view that is similar to human vision. The diagonal of the image plane is typically used as the reference for field of view determination. A normal lens has a focal length that is approximately equal to the diagonal measurement of the image plane. When the focal length is equal to the diagonal measurement it produces a diagonal field of view of approximately 53degree which is similar to human vision.

For 35mm film (24/36) the diagonal measurement is 43.27mm (roughly). 50mm is close to this measurement so it is considered a normal lens.
A 50mm lens produces a 47degree diagonal field of view that is close to 53 degree.

Though human field of view is about 180 degree by 120 degree, we cannot cover that area in one go. It’s our brain that computes and gives us an apparent vision. A very simple test can be done by covering or closing one eye. Another reason for not to cover 180 degree is human’s nose bridge.
"The approximate field of view of a human eye is 95° Out, 75° Down, 60° In, 60° Up. About 12-15° temporal and 1.5° below the horizontal is the optic nerve or blind spot which is roughly 7.5° in height and 5.5° in width."

Sorry i cheated, its from Wikipedia.

Are you calculating in Stereoscopic FOV??

But 50mm is considered a normal lens for Full frame and 35mm for 1.5crop.


Quote:
Originally Posted by SPARKled View Post
Yes probably you can at base ISOs and good light but anything beyond ideal conditions, cant compare even to a base DSLR.
We are not comparing the system or sensor. We are comparing the APETURE.

Nothing else effects APETURE in a lens that itself. Please read above to see what an APETURE looks like. APETURE is a PHYSICAL thing-maximum SIZE of the hole in the lens to let the light pass through which doesn`t gets affected by anything else.

ISO is the sensitivity of the FILM/SENSOR

Seriously is it that hard of a topic to understand APETURE and F-no. ??


Quote:
Originally Posted by SPARKled View Post
I have the Nikon 50 1.8 and the 1.4, though a 1.4 is better in build to the 1.8, neither is good enough to survive an Alto runover forget a Safari. The Zeiss I have no idea about.
Actually Nikon 50mm f1.8 is better built since majority of it is cross-sectioned ABS plastic and whole designed is based on older lenses with focusing done via rotating the lens pancake assembly in a barrel and all of the elements are sealed inside a pancake system including APETURE. Since this system allows more surface area to spread the force/weight, its more likely to survive a hit compares to AFS/EFS/HSM lenses where focusing elements are pretty much floating. Specially the new lenses with floating VR/IS/OS elements.

My Nikon 50mm f1.8 Survived 2Tonne vehicle runover, actually vehicle stopped on d3+50mm for around 2-3 minutes, till we were able to push and roll it over. 50mm still works and is still my favourite lens which D3 is......errrr......DEAD.

Zeis and Leica lenses can actually take quite a bit of beating.


Quote:
Originally Posted by Jaggu View Post
You guys are too much, who will let a car run over lenses! I get peeved even with minor scratch's on the hood!

But one thing i have learned with photography is, money talks! atleast in the equipment side. The difference very evident once you view the shots on a big apple screen
Lol, i didn`t wanted to let the car run over it, it was an accident but an accidental dicovery which sparked quite a big debate over lens manufacturing and quality controls at different manufacturers.

Money is nothing, Photography is my hobby and i have spent pretty much whatever was required on it. I am never going to look back at the money i spent otherwise i would start crying.

To be honest if i am taking landscape shots, i can get same image from Nikon 70-300mm G f4-5.6 and from Nikon 300mm f2.8 VR. One cost me $105 second hand while other cost me $9700 brand new. But when it comes to day shots at MCG (Melbourne Cricket Ground), its a different matter, 70-300mm will still be confiring focus while with 300mm f2.8, i would have taken 7-10 shots.

Here`s are the image of Nikon 50mm f1.8 after being run over by 2 tonne vehicle and getting repaired.

Internal Pancake assembly with all the elements and Apeture sealed off from dust and moisture. Only entry here is a slight cavity where internal level for APETURE control goes in. Its not visible in any of the images i have linked.


Slight difference in the back of the lens, Ideally it should be right in the center but its around 0.4mm off the centre but still within limits. There is no Front/Back Focus issues with the lens, its performing perfectly fine.


Front filter ring completley removed after being damaged and hindering in the smooth focusing. I only had a plier handy, so i just bent it off. Later i took a Xacto knife and tried to cut it off smoothly. I am still trying to get some time to file it down and refill it with black rubber cement to make it one off lens.


Whole lens disassembled and being cleaned, here you can see the screw based design i was talking about above.


Close up of the front while being cleaned. You can see the dust collected in the front.


I will upload D3`s images later on.

Only issue left now is that i cannot use this adapter. It took me a fair while to get this lens element. Its sole job is to provide macro capability to the lens. Here it is mounted in special spacer. Basically a 4mm spacer that screws onto 52mm thread and then has a 52mm thread to mount 52mm filters in front. Space was originally developed as a part for custom extension tubes with controllable extension but that`s another story. I used bluetack to secure the element inside the spacer which was later replaced with optical cement after final tests. Now its just a piece of glass left with me and i cannot use it till i buy another 50mm f1.8


Sorry if i was rude to anyone here, please take it as me being ignorant in my youth.

Thanks

Last edited by Jaggu : 3rd November 2009 at 14:36. Reason: Please host the pictures directly to TBHP, external hosting is NOT allowed. Refer Announcements section. Thanks
it_inspector is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
DSLR Video Discussion Sankar Gadgets, Computers & Software 129 18th August 2017 19:07
On a Temple Visiting Spree! Returned with only 1 wish. Need a DSLR! mclaren1885 Travelogues 23 27th July 2007 11:21


All times are GMT +5.5. The time now is 20:07.

Copyright ©2000 - 2017, Team-BHP.com
Proudly powered by E2E Networks