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FORUMS Photography Talk by Genre Macro Talk 
Thread started 29 Jun 2009 (Monday) 20:04
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Not What I expected....

 
Nickm292
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Jun 29, 2009 20:04 |  #1

Ok So I am a Sony Shooter... please don't shoot me :)

I picked up a set of Kenko tubes to use along with my Sigma 105mm to do some close-up Macro work (gotta say I was inspired to try it by some of the submissions on this site). So I attach the tubes between the A700 and the Sigma 105mm... well now it will not Focus at all! i even tried playing around with MF, but still nothing....

Am I doing something wrong? I tried searching but came back with nothing...

Thanks guys and gals... this site has been amazing to learn off of!

-Nick


Sony A700 | Sony VG-C70AM Grip | Sigma 70-200mm f/2.8 | Minolta 50mm f/1.4 | Sigma 18-50mm f/2.8 |
Sigma 10-20mm f/4-5.6| Sigma 105mm f/2.8 MACRO | Minolta 75-210mm f/4 'Beercan'| Sigma
EF 530 DG Super (Flash)

  
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gjl711
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Jun 29, 2009 20:08 |  #2

You have to get much closer to the target. That's what tubes do, reduce the focus distance. How close depends on how much extension you have.


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krb
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Jun 29, 2009 20:15 |  #3

The depth of field is -razor- thin, especially when you are looking through the viewfinder with the aperture all teh way open. Manually turn the focus to the closest setting and hold the camera just above a flat surface like the floor or a bed. You want a view that will let you see everything from about 6 inches to about 6 feet so that you can try to identify where the focus plane is. Once you have an idea of where it is, you'll find it much easier to use.


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Nickm292
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Jun 29, 2009 20:18 |  #4

gjl711 wrote in post #8197210 (external link)
You have to get much closer to the target. That's what tubes do, reduce the focus distance. How close depends on how much extension you have.

krb wrote in post #8197232 (external link)
The depth of field is -razor- thin, especially when you are looking through the viewfinder with the aperture all teh way open. Manually turn the focus to the closest setting and hold the camera just above a flat surface like the floor or a bed. You want a view that will let you see everything from about 6 inches to about 6 feet so that you can try to identify where the focus plane is. Once you have an idea of where it is, you'll find it much easier to use.


Thanks for the fast responses.... tried it out and now I see how they work...

Thanks guys!!


Sony A700 | Sony VG-C70AM Grip | Sigma 70-200mm f/2.8 | Minolta 50mm f/1.4 | Sigma 18-50mm f/2.8 |
Sigma 10-20mm f/4-5.6| Sigma 105mm f/2.8 MACRO | Minolta 75-210mm f/4 'Beercan'| Sigma
EF 530 DG Super (Flash)

  
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swimjax
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Jun 29, 2009 20:53 as a reply to  @ Nickm292's post |  #5

Funny, I had the same question and came here to find the answer. I just bought my Kenkos last week. :)


www.flickr.com/photos/​swimjax (external link)

Canon 50D

10-22 | 17-55 | 70-200 f/2.8L IS | 85 f/1.8 | 100 macro

  
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Not What I expected....
FORUMS Photography Talk by Genre Macro Talk 
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