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Old May 16, 2009, 2:04 AM   #1
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Default What Went Wrong? Focus

i can never seem to get correct dof
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Last edited by calr; May 16, 2009 at 10:29 AM.
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Old May 16, 2009, 10:33 AM   #2
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Getting proper depth of field is very tricky when doing closeups of flowers. A tripod is a must. Use aperture priority mode (or whatever it is called on your camera). Set your aperture to it's smallest setting (largest f-number). This will result in a slow shutter speed so be sure to turn off the wind! LOL!

Nice flower, by the way.

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Old May 16, 2009, 12:42 PM   #3
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Beautiful flower Bill! Cal, thank you very much for the info on macro work, I don't do much of it but just put your advice to work with much better results!!

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Old May 16, 2009, 1:25 PM   #4
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Brian Valentine is a Grand Master in the world of macro-photography. Check out some of his work ( http://www.lordv.smugmug.com/ ). He explains various techniques (including "focus stacking") to overcome the problem of shallow depth-of-field. Here are some of my favourites of his photos: http://www.dgrin.com/showthread.php?t=130638

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Old May 16, 2009, 1:33 PM   #5
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Oh, there's also a phenomenon where the the focal point of the lens changes very slightly as the lens is stopped down; i.e. when you focus at max aperture (lens wide open) the focal point shifts when the lens is stopped down to make the exposure. There are lot of threads and articles around explaining this, and how to deal with it. Look for "front focus" and "back focus" and "depth of field problems" and "macro". Perhaps you've already come across this, but the reason it's so fresh in my mind is that I've just spent the last couple of days researching this...

Good luck -
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Old May 21, 2009, 4:53 AM   #6
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Default cheers

thanks for the replys, I will get the tripod out as a first step, hate to use them as i'm a bit of an instant photo bod. Much to chew on
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Old May 21, 2009, 5:11 AM   #7
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A crop, containing just the yellow and purple middle from the first two shots, would have been a brilliant entry, Bill, in our last 'shootout' on macros/close-ups. So, being more tolerant than you are of my own failings, I don't think I'd have thought anything went wrong at all!
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Old May 21, 2009, 6:32 AM   #8
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I used to hate to carry a tripod for the same reasons, but now I can not see me going out without one.
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