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[icon] Photography experiments - Patti
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Subject:Photography experiments
Time:01:32 am
Apertures Sometimes I feel like a total n00b. OK, I *am* a total n00b, but most of the time I can fake my way around it.

So tonight I was shooting more flowers, and I noticed yet again that most of them didn't seem as sharp as I thought they should be. I was shooting with the lens stopped way down for maximum depth of field (where maximum is probably something on the order of a quarter inch, I'd guess.) I had a vague notion that the shots where I had the lens open wider, so I did the geek thing and experimented.

What did I learn? On my lens, maximum sharpness is around f/11, after which it starts falling off pretty badly. Here's one set of test shots from tonight. Clicking on the image will get the large but very detailed version, which shows a lot of detail.

When you look at the picture, bear in mind that the thing you're staring at is about a millimeter across.
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jcdill
Subject:Did you use mirror lockup?
Link:(Link)
Time:2007-01-15 06:45 pm (UTC)
See http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=001Ne6

Some comments on that page indicate that both mirror lockup and aperture prefire are important in macro photography. I wonder if Canon DSLR bodies stop down the aperture when they lockup the mirror. My google-fu hasn't found the answer yet.
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[icon] Photography experiments - Patti
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