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Old 5th December 2012, 21:46   #11041
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I sort of have not clearly understood what exactly you are trying to say. In 50 mm the fastest AF lens currently is the 1.4.

A more faster 1.2 is a manual focus lens and out of production. If you get a mint condition used one, buy it. An unbeatable lens.

Nikkor 35 mm comes in f/1.8 that is quite fast. Generally you won't need any faster than this in wide angles.

Quote:
Originally Posted by vivekiny2k View Post
A question on lenses. I see the market is full of F2.8 lenses for 35 mm and lower. I thought the lower focal length you go, easier it is to increase the aperture size. I see mostly F1.4-1.8 in 50mm and above.

Is it difficult to make wide angles in larger apertures or is it just not needed? I have never had a wide angle lens but am researching which one to buy.
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Old 5th December 2012, 21:50   #11042
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Originally Posted by gd1418 View Post
Nikkor 35 mm comes in f/1.8 that is quite fast. Generally you won't need any faster than this in wide angles.

This is what I was trying to understand. I am complete newbie in lenses. So can we say if somebody made a 16mm F1.2, the costs won't justify the gains?

I was looking at DOF and not speed per se.
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Old 5th December 2012, 21:56   #11043
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Vivek, it depends. Generally a 16 mm would be mostly used for landscapes or architectural pictures and those are generally taken in bright daylight. Even if the 16mm was a f/4, it would suffice. BTW, the fastest 16mm is a f/2.8. DOF is an aperture controlled feature and depends how an user puts it to use.

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Originally Posted by vivekiny2k View Post

So can we say if somebody made a 16mm F1.2, the costs won't justify the gains?

I was looking at DOF and not speed per se.
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Old 5th December 2012, 23:16   #11044
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Originally Posted by gigy View Post
smartshoppers.in has it for 33800
http://www.smartshoppers.in/product/...i-vc-pzd-lens/
I am actually trying to find out the grey market price for the same lens for nikkon and the nikkon 18-200 through friends in banglore- at jayesh. Did you check up the rates there?
I tried calling up Jayesh, but there was no reply on his mobile number (I did call his shop, but got a response from them saying that I had to contact Jayesh for prices).

Have left him a text message, but haven't yet received a response to that either.
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Old 5th December 2012, 23:25   #11045
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Quote:
Originally Posted by gd1418 View Post
Vivek, it depends. Generally a 16 mm would be mostly used for landscapes or architectural pictures and those are generally taken in bright daylight. Even if the 16mm was a f/4, it would suffice. BTW, the fastest 16mm is a f/2.8. DOF is an aperture controlled feature and depends how an user puts it to use.
I think I understand. It will be challenge to get sharpness across the wide angle at lower apertures. So it's an engineering limitation as well.
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Old 6th December 2012, 10:09   #11046
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Is anyone aware of a reliable person in Bangalore to repair Canon DSLR camera. Mine is out of warranty and Canon is charging 2000+taxes just to check what is wrong. The frame of the shutter or that thing which moves up and down before the mirror has come off so all pics are blank.
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Old 6th December 2012, 13:07   #11047
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Quote:
Originally Posted by vivekiny2k View Post
A question on lenses. I see the market is full of F2.8 lenses for 35 mm and lower. I thought the lower focal length you go, easier it is to increase the aperture size. I see mostly F1.4-1.8 in 50mm and above.

Is it difficult to make wide angles in larger apertures or is it just not needed? I have never had a wide angle lens but am researching which one to buy.
Well look at the DOF calculator first.

At 15mm if there is a F1.2 lens then also the DOF for a subject at 10 feet distance will be massive 7 feet on APS-C sensor and hyperfocal distance is 32 feet.

http://www.dofmaster.com/dofjs.html

So as you can see as the focal length goes short there is no huge gain in terms of narrow DOF.

Coming back to the other usecase of high aperture actually F 2.8 or F 2 is enough in late evenings to capture the scene and if you are using a tripod
then can take night shots. So if cost vs benifit analysis is done there is no point in making an ultrafast lens ( below 20mm ).

15mm on APS-C is 24mm on full frame and there is a Canon 24 F1.4 AF lens which someone may need for a niche use case.

However for normal FL on APS-C ( 30mm ) or 50mm on FF, F1.4 makes good sense Some good and affordable AF lenses in this Focal length are

Budget Catagory: Canon 35mm F2 , Sigma 30mm F1.4 , Canon 28 F1.8

High Cost : canon 24mm 1.4 USM, Canon 35mm F1.4 L USM

If you insist on faster then 1.4 then Canon 50mm F1.2 L USM is there

So widest and fastest ( with AF) you can go is using a Canon Full frame camera with Canon 24 F1.4 USM


All these lenses are Auto Focus lenses.


Quote:
Originally Posted by gd1418 View Post
I sort of have not clearly understood what exactly you are trying to say. In 50 mm the fastest AF lens currently is the 1.4.
Well there is a Canon 50 F1.2 L USM which is AF and also 24 F1.4 USM exists , I really do not know who uses them and why.

Last edited by amitk26 : 6th December 2012 at 13:11.
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Old 6th December 2012, 13:10   #11048
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Originally Posted by motomaverick View Post
Is anyone aware of a reliable person in Bangalore to repair Canon DSLR camera. Mine is out of warranty and Canon is charging 2000+taxes just to check what is wrong. The frame of the shutter or that thing which moves up and down before the mirror has come off so all pics are blank.
Check with Deendayal Camera Service at CMH road.
They are multibrand service outfit and they have displayed a plaque from Canon , which awards them authorized service status.
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Old 6th December 2012, 16:34   #11049
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Good luck with Deendayal. I had bad experience with them. They 'lost' my very ncie 28-70/f4 Pentax lens. I gave it to them to get the fungus cleaned. Then they returned it clean, but screwed up the lens arrangement (it wouldn't focus at all). After that they told me it is 'lost' :( I am sure the guys in reception still remembers me
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Old 6th December 2012, 17:13   #11050
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Quote:
Originally Posted by motomaverick View Post
Is anyone aware of a reliable person in Bangalore to repair Canon DSLR camera. Mine is out of warranty and Canon is charging 2000+taxes just to check what is wrong. The frame of the shutter or that thing which moves up and down before the mirror has come off so all pics are blank.
There is this guy who handles almost all kinds of camera's infact he is a specialist with SLR's and DSLR's but the thing is, his is a small outlet unlike the multinationals so dont be taken aback. Pratap ~ 9663863416.
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Old 6th December 2012, 17:25   #11051
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Any recommendations on selecting a bagpack for the kit? I will be carrying this 18-135 kit, 50mm and the other accessories like charges, Cards etc. But may need space for a bigger lens in the future. So shud I start small and go big when the need arises? or buy something future proof now ?

Bags are some thing which you cant keep changing all the time. And the good ones also cost in the range 3-6K and if not more. (Lowepro).
So, when buy its important to know what all you would be carrying. Check with Lowepro range, and see what you would be needing.
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Old 6th December 2012, 17:34   #11052
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I've been off photography for a while now. I own a Canon EOS 1000D and am looking to get the cheapest possible macro lens for it - across any make. Any suggestions?
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Old 6th December 2012, 19:49   #11053
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Quote:
Originally Posted by amitk26 View Post
Well look at the DOF calculator first.

At 15mm if there is a F1.2 lens then also the DOF for a subject at 10 feet distance will be massive 7 feet on APS-C sensor and hyperfocal distance is 32 feet.

Great, thanks! that site has a good information for quick calculations.


Another question, because most lens imperfections lie at the corners, is it safe to say that a FF lens will perform better on a crop sensor compared to a lens specifically made for a crop sensor? Sony Nex in my case. I understand that it will need adapters and what not, but only looking at optical performance.

So If I was looking at a lens review for a FF lens, I should ignore imperfections at extreme corners?
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Old 7th December 2012, 01:20   #11054
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Hi guys, planning to go for my first ever meteor spotting on the 13th-14th Dec during the Geminid meteor shower with my Alpha 35 and 18/55 stock lens. Tentative plans are to go to a place call Parsik Hill which is at a height of about 500 feet. Any tips that might help me get a good click in case I am lucky enough to spot a few meteors?
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Old 7th December 2012, 01:43   #11055
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Haven't posted here in a long while.

I had set my eyes on a Canon EF 70-200 f4 L series lens. While I waited, the price rose from 42,000/- to 63,000/- (give or take a thousand or two depending on where to buy it). In fact, the general increase in Canon lens prices has just killed my chances of buying a Canon Telephoto lens.

I had gone to Pritam's at Chandni Chowk for a Vanguard tripod with Pritam's standard 20% discount on MRP. I spotted the Tamron AF 70-300mm F/4-5.6 Di LD Macro selling for Rs 8,200/- (Pritam's price). Compared to the Canon 55-250, it did not have IS, but it had a longer range, it was compatible with full-frame bodies and it had a macro.

Image taken from Flipkart:

http://img7a.flixcart.com/image/lens...ufytkx7ay.jpeg

Never before have I done such spur-of-the-moment decision-making. I just bought it. I was without a telephoto lens anyways, so it was better to have one than keep on waiting for one I didn't want to spend on, right now.

The first few days have taught me that:

1. This lens is most-effective at 2-3 stops higher than the maximum aperture at that focal length. Actually F7 and above is good.
2. It's autofocus is very good and very fast (for its price).
3. Low-light conditions are not its strong points. (could also be a limitation of Canon EOS 500D messing up photos whenever you go beyond ISO 800).
4. Lack of IS means you have to learn meditation to hold the camera super-steady with that heavy telephoto up-front.
5. Macro mode is only 2:1 but good for occasional macro endeavours.

All said and done, it was an impulse purchase and (hopefully) a stop-gap arrangement till I can afford to indulge myself with a telephoto lens costing a lakh (at the rate their prices are going up). I believe an advanced version of the same lens with IS is available in Tamron at 28,000/- or so. But I find this lens to be paisa vasool for the amateur/hobbyist on a budget.

Closing with a photo of my kit (excuse the picture quality as this is taken from my Xperia Mini-Pro camera):

Canon EOS 500D
Vanguard MAK 233 tripod
Canon EFS 18-55 kit lens
Canon EF 50 1.8 prime
Tamron AF 70-300 Di-Ld Macro.
Attached Images
 

Last edited by architect : 7th December 2012 at 01:46.
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