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Macro Nirvana! 10:1!(?)
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PostPosted: Wed Feb 25, 2009 9:32 pm    Post subject: Macro Nirvana! 10:1!(?) Reply with quote

PS: I want input on the macro ratio? What is it in reality?

Ok, I don't know how to compute it so it can't be 10:1 but this is a high magnification ratio that I wasn't expect to shoot at. I'm glad that I can take nice shot at this magnification.

All shots are taken with this setup:
- Tamron 2.5/28, Reversed @f:16
- 52-49mm step down ring
- 52mm reverse macro adapter
- Full expanded macro belows
- Canon EOS 5D@M, 1/200, ISO changed between 50-200
- Sunpak 422D from left side triggered with Cactus V2s
- Sunpak 433D from left side triggered with Cactus V2s

With this setup the distance betwen the lens start point and the body is likely 14cm. Focus adjustment was made by moving camera fort and back by hand so precision is not that good, I need to buy a 4 way macro base like this one:


These samples are original sized images, there isn't any crop but I've made done slight exposure modification, sharpness increased from 4 to 5-6 in some shots, and in some slight contrast boosting.

This electronic component is just 4mm!







PostPosted: Wed Feb 25, 2009 9:38 pm    Post subject: Reply with quote

How far is the lens from the circuit board ?


PostPosted: Wed Feb 25, 2009 9:43 pm    Post subject: Reply with quote

luisalegria wrote:
How far is the lens from the circuit board ?

Late question Smile
Let me check it.


PostPosted: Wed Feb 25, 2009 9:43 pm    Post subject: Reply with quote

Yalcin,

The easiest way to get "magnification" is to shoot a ruler in your home
in the same setting. There is a formula for macro magnification, forget it. Very Happy


PostPosted: Wed Feb 25, 2009 9:46 pm    Post subject: Reply with quote

From the rear element to the circuit board, it is something like 45mm.


PostPosted: Wed Feb 25, 2009 10:04 pm    Post subject: Reply with quote

Here is a quick ruler shot,
verticaly it's like 3.5mm:


PostPosted: Wed Feb 25, 2009 10:12 pm    Post subject: Reply with quote

OK, let's asume this is a fullframe shot of your 5D.
The height of the 5D's sensor is about 24mm, right?

This means your macro ratio is about 6.8:1.


PostPosted: Wed Feb 25, 2009 10:14 pm    Post subject: Reply with quote

LucisPictor wrote:
OK, let's asume this is a fullframe shot of your 5D.
The height of the 5D's sensor is about 24mm, right?

This means your macro ratio is about 6.8:1.

Thanks!
How we got that ratio Smile


PostPosted: Wed Feb 25, 2009 10:16 pm    Post subject: Reply with quote

24 divided by 3.5 Very Happy Very Happy Very Happy


patrickh


PostPosted: Wed Feb 25, 2009 10:19 pm    Post subject: Reply with quote

patrickh wrote:
24 divided by 3.5 Very Happy Very Happy Very Happy
patrickh

Cool! Razz
Ok, I need to sleep Laughing


PostPosted: Wed Feb 25, 2009 11:58 pm    Post subject: Reply with quote

Very nice... I'd like to see what my limits are. But as you say, you really need one of those 4-way bases to make life so much easier. And they're fairly expensive for what at least appears to be such a simply constructed thing :-p


PostPosted: Thu Feb 26, 2009 9:31 pm    Post subject: Reply with quote

I couldn't find a fly but luckly mom has spotted this spider at the ceiling and it was nicely haired Smile

Sharpness, contrast, exposure adjustments are made at RAW convertion and Levels at PS:


PostPosted: Thu Feb 26, 2009 10:22 pm    Post subject: Reply with quote

Great shot of an ugly dood


patrickh


PostPosted: Fri Feb 27, 2009 1:15 am    Post subject: Reply with quote

Looked like a cool setup and a lead for my DSLR manual macro pursuit but maybe not practical for field portability. Thanks for sharing.
gil


PostPosted: Fri Feb 27, 2009 11:20 am    Post subject: Reply with quote

This one is Tamron SP 2.5/90 on fully extended bellows:


PostPosted: Fri Feb 27, 2009 11:37 am    Post subject: Reply with quote

NICE spider shots!


PostPosted: Fri Feb 27, 2009 6:12 pm    Post subject: Reply with quote

Great shots!


PostPosted: Fri Feb 27, 2009 7:27 pm    Post subject: Reply with quote

Ditto ! Nice