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By ColinT-B
Took this testerday in the garden. Trying out a Macro lens. Was under the impression that if I had the aperture fully closed the image would be sharp from front to back, but actually found the image quite soft in areas, even though shot at f22.
Can any Macro experts shed and advice ??
Regards, Colin

Tags: Close-up and macro Wildlife and nature

Voters: lifesnapper, Len1950, gordon002 and 1 more

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ringyneck 11 315 18 United Kingdom
22 Apr 2011 8:09PM
Using f 22 on a normal shot you can mess about and get most thing in focus BUT with macro and being close up the dof is SO narrow that is not a bed of roses.
You have to decide what you want as the focal point and work around it.

I have the Sigma 105 which is f22on my OLY ... BUT on the Canon fit one it's that might be better.


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Chinga Plus
7 3 1 United Kingdom
22 Apr 2011 9:20PM
Can't give you any advise as I'm not very technical. But I like the image. Quite different.
ColinT-B 12 38 3 England
22 Apr 2011 9:32PM
Thanks for the advice Keith, so, if I understand it right, I really need a Macro lens with a higher fstop to achieve a sharper DOF.
alansnap 14 577 26 United Kingdom
22 Apr 2011 10:12PM
I think it's best that you get a depth of field calculator - there are plenty on the net that you can download. Depth of field is relative and for close-ups even at f32 depth of field will be measured in millimetres. The only way you could do what you want is to use focus stacking which involves using software to merge several photographs focussed at various points from front to back through an image. The lens you are using will do almost as well as any other. My Canon macro will stop down to f32, but that's only going to have a marginal effect, and at that aperture image quality suffers because of defraction. Basically the closer you are to an object the shallower the depth of field will be at any given aperture, and when you're very close for a macro shot your dof will be tiny. Sorry you will just have to live with it.

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