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Old 24th August 2009, 12:30   #6271
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Quote:
Originally Posted by clevermax View Post
@dkey: It is called a lens hood. BTW, what is the subject of your macro? It looks like an eye, or is it?
Thanks, ill remember that and yes its an eye of a doll!!

@guyonblackybx:- my answers to your question are in BOLD

Quote:
Originally Posted by guyonblackybx View Post

1. Nothing wrong with the procedure.

2. Gap is fine but u have to make sure that light doesnt enter from this joint. I feel this gap is one reason why you have that darker area.

There is no light entering, I am sure about that.

3. Another reason for the darker area can be due to usage of larger lens over the smaller one. Have you tried mounting 75-300 onto camera and revesring 18-70?

No is did not try, i think i should try that out

4. It can be done in low light provided that you manage to keep the lenses together and mount the camera on to tripod so that you can use long exposure.

Thanks for the suggestion, but if i mount them on the tripod i am scared the lenses will get detached, fall and break, so as of now ill use hand held till i dont find a permanent solution.

5. I would go for single lens. I wont suggest using 2 lenses as you did because am not sure how much stress a lens can take up on its filter side.
BTW did you try reversing you 18-70mm t different focal lengths?

I tried but could fit the lens to the camera body. I dont have an adaptor and didnt want to glue or tape it with the body. Even if i pushed it close to the camera body the shutter release does'nt work

Check out the images one clicked with lens at 55mm and 3rd one at 18mm difference in magnification is huge.

I used 2 lenses only once that too to capture the pixels on laptop screen and CRT monitor. I havent come across any other subject of that size Did you try

No, not the screen, have not tried it as yet


What I have observed is I cannot get anything on reversing lense beyond 100mm everything gets out of focus infact you get any shape. Its just my observation. Gurus correct me if am wrong.

Gurus, any thoughts on that?
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Old 24th August 2009, 13:01   #6272
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@guyonblackybx
I got you, anyways expecting more from your reversed lens!

Homes in dews.
Name:  3269362745_dfd158b3f4_o.jpg
Views: 430
Size:  195.7 KB

Regards,
TG.
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Old 24th August 2009, 16:26   #6273
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Quote:
What is cheap? I think we are worried about dust on the sensor, and dSLR bodies are not cheap.
Hi Samurai,
in reversed macro, the risk of getting dust on sensor is same as there is any other lens (assuming you have the right reverse adapter for the lens) There is additional risk of getting dust into lens as you expose the back portion of the lens.

Quote:
But then most of us end up with images of heavily magnified objects with hardly any composition. That is why photomacrography is so painful, so much effort and nothing to show for it.
Of course ! I am not heavily into macro photography but I just got fascinated by the optics behind the reverse macro thing, when I heard first about it. So I ended up trying it out for some amount of time. If someone is heavily into macro photography, then of course a dedicated macro lens is the way to go.
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Old 24th August 2009, 16:30   #6274
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Another option for a cheap alternative is to use extension tubes on a short focal length lens (50 mm-70 mm should be fine). A few extension tubes (Kenko) come with electrical contacts that allow AF.

I feel the extension tubes are better than the reverse technique as it does not add more glass elements in between the lens and the sensor. The only problem is that the DOF is razor thin and an extension tube wont do well in places where longer working distance are needed.

Here are 2 pics clicked using a Canon 18-55 (no IS) mounted on extension tubes , shot using a Canon 20D. The magnification is around 1.8x

The Official non-auto Image thread-2lcmxc8.jpg


The Official non-auto Image thread-xfysmo.jpg
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Old 24th August 2009, 21:34   #6275
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Cool Beauty of Keralam

I read Rtech's 1st post and thought I should post in imageshack.
So here it is beauty of Keralam. Most of these are my mom's and dad's house in my native!

The Official non-auto Image thread-po.jpg

The Official non-auto Image thread-16052008703.jpg

The Official non-auto Image thread-16052008711.jpg

The Official non-auto Image thread-16052008751.jpg

The Official non-auto Image thread-pp.jpg

The Official non-auto Image thread-18052008829.jpg

The Official non-auto Image thread-18052008832.jpg
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Old 24th August 2009, 22:45   #6276
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Quote:
Originally Posted by Torqueguru View Post
@guyonblackybx
I got you, anyways expecting more from your reversed lens!

Homes in dews.
Attachment 179507

Regards,
TG.
Lovely, these dew drops look more like solid

Attaches is another reversed lens shot. This one is hand held without adaptor. Clicked with 18-55mm kit lens @ 18 mm


Quote:
Originally Posted by abhijitaparadh View Post
Hi Samurai,
in reversed macro, the risk of getting dust on sensor is same as there is any other lens (assuming you have the right reverse adapter for the lens) There is additional risk of getting dust into lens as you expose the back portion of the lens.



Of course ! I am not heavily into macro photography but I just got fascinated by the optics behind the reverse macro thing, when I heard first about it. So I ended up trying it out for some amount of time. If someone is heavily into macro photography, then of course a dedicated macro lens is the way to go.
I don't know but I enjoy shooting reverse more than macro. Agree that there many great macro lens out there and am gonna get one in near future but even then am going to use reverse lens.

Quote:
Originally Posted by trance_nut View Post
Another option for a cheap alternative is to use extension tubes on a short focal length lens (50 mm-70 mm should be fine). A few extension tubes (Kenko) come with electrical contacts that allow AF.

I feel the extension tubes are better than the reverse technique as it does not add more glass elements in between the lens and the sensor. The only problem is that the DOF is razor thin and an extension tube wont do well in places where longer working distance are needed.

Here are 2 pics clicked using a Canon 18-55 (no IS) mounted on extension tubes , shot using a Canon 20D. The magnification is around 1.8x

Attachment 179682


Attachment 179683
We can make reverse lens dust proof provided that one can lay hands on an olf lens bottom cap.

I used my reverse lens at home n risk is low

Here is shot of 0.7mm ball point pen using 18-55mm kit lens @ 18mm.

And an ant @ 18mm reverse.(havent processed it)
Attached Thumbnails
The Official non-auto Image thread-pest.jpg  

The Official non-auto Image thread-point-7-mm-ball-point-pen.jpg  

The Official non-auto Image thread-ant-head.jpg  


Last edited by guyonblackybx : 24th August 2009 at 22:50.
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Old 25th August 2009, 14:18   #6277
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The first few results from the D300. Nothing spectacular. Clicked around in my office itself. Given below with Exif info:

Metering Matrix
Mode - P
Shutter 1/30
Aperture 5.6
ISO - Auto 1400
Focal length - 135mm
WB - Auto

The Official non-auto Image thread-bcg_1300.jpg

Metering Matrix
Mode - P
Shutter 1/30
Aperture 5
ISO - Auto 800
Focal length - 58mm
WB - Auto
AF - 51 points

The Official non-auto Image thread-bcg_1305.jpg

Metering Matrix
Mode - P
Shutter 1/30
Aperture 5.6
ISO - Auto 1600
Focal length - 120mm
WB - Auto
AF - 51 points

The Official non-auto Image thread-bcg_1306.jpg

Metering Matrix
Mode - S
Shutter 1/125
Aperture 5.6
ISO - Auto - Hi 1
Focal length - 135mm
WB - Auto
AF - 51 points

The Official non-auto Image thread-bcg_1308.jpg

Metering Matrix
Mode - A
Shutter 1/30
Aperture 5.6
ISO - Auto - Hi 0.3
Focal length - 62mm
WB - Auto
AF - 51 points

The Official non-auto Image thread-bcg_1310.jpg

Metering Matrix
Mode - M
Shutter 1/40
Aperture 5.6
ISO - Auto - Hi 1
Focal length - 135mm
WB - Auto
AF - 51 points

The Official non-auto Image thread-bcg_1313.jpg

Metering Matrix
Mode - M
Shutter 1/40
Aperture 5.6
ISO - Auto - 220
Focal length - 135mm
Flash - TTL - in built
WB - Auto
AF - 51 points

The Official non-auto Image thread-bcg_1315.jpg

Metering Matrix
Mode - M
Shutter 1/40
Aperture 5.6
ISO - Auto - Hi 0.3
Focal length - 135mm
WB - Auto
AF - 51 points

The Official non-auto Image thread-bcg_1317.jpg

Metering Matrix
Mode - M
Shutter 1/40
Aperture 5.6
ISO - Auto - 2800
Focal length - 70mm
WB - Auto
AF - 51 points

The Official non-auto Image thread-bcg_1318.jpg

Metering Matrix
Mode - M
Shutter 1/40
Aperture 5.6
ISO - Auto - 2200
Focal length - 135mm
WB - Auto
AF - 51 points

The Official non-auto Image thread-bcg_1320.jpg


Quote:
Originally Posted by Rudra Sen View Post
Guru, a big congrats for your new baby. Now quickly show us some results.
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Old 25th August 2009, 14:22   #6278
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Default D300 first look

Metering Matrix
Mode - M
Shutter 1/40
Aperture 5.6
ISO - Auto - 200
Focal length - 135mm
Flash - TTL
WB - Auto
AF - 51 points

The Official non-auto Image thread-bcg_1321.jpg


Metering Matrix
Mode - M
Shutter 1/40
Aperture 5.6
ISO - Auto - 200
Focal length - 100mm
Flash - TTL
WB - Auto
AF - 51 points

The Official non-auto Image thread-bcg_1323.jpg


Metering Matrix
Mode - M
Shutter 1/40
Aperture 5.6
ISO - Auto - 1250
Focal length - 135mm
WB - Auto
AF - 51 points

The Official non-auto Image thread-bcg_1327.jpg


Metering Matrix
Mode - P
Shutter 1/30
Aperture 5.6
ISO - Auto - 1600
Focal length - 135mm
WB - Auto
AF - 51 points

The Official non-auto Image thread-bcg_1332.jpg
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Old 25th August 2009, 19:09   #6279
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Whoa! Its raining macros!
I need to get a macro shielding umbrella!
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Old 25th August 2009, 19:50   #6280
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Quote:
Originally Posted by Torqueguru View Post
Whoa! Its raining macros!
I need to get a macro shielding umbrella!
Yes, yes.. Post some nice lovely landscapes so that people will move towards landscapes from macro vision ;-)
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Old 25th August 2009, 19:59   #6281
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Quote:
Originally Posted by Torqueguru View Post
Whoa! Its raining macros!
I need to get a macro shielding umbrella!
Here are a few more, reverse lens hand held with out adaptor.
Attached Thumbnails
The Official non-auto Image thread-catterpiller-head.jpg  

The Official non-auto Image thread-catterpiller-head-1.jpg  

The Official non-auto Image thread-catterpiller-body.jpg  

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Old 25th August 2009, 20:34   #6282
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Smile my contribution

Quote:
Originally Posted by kaushik_s View Post
Yes, yes.. Post some nice lovely landscapes so that people will move towards landscapes from macro vision ;-)
my contribution to move from macro vision to landscapes..
Attached Images
     
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Old 25th August 2009, 20:44   #6283
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Well here is one close up, not yet a macro..haha
The Official non-auto Image thread-8d6d457fe01b733245aee53aba7867ba.jpg
Regards,
TG.
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Old 25th August 2009, 20:58   #6284
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another one from me..your comments on this @ TG
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Old 25th August 2009, 21:20   #6285
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@ruffrider
Well, the picture needs to make an impression, and for that you need to compose it well. Your main subject is the fly right, centralizing the main subject 8 out of 10 times, doesnt work. I feel that, following the 1/3rd rule would be better here. Also, the large white patch behind the trees is distracting the viewer.
Regards,
TG.

Last edited by Torqueguru : 25th August 2009 at 21:40.
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