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General Photography
Macro
Macro help with focus and DoF
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<blockquote data-quote="J-see" data-source="post: 418546" data-attributes="member: 31330"><p>Some more about the advantage of not shooting as close as possible.</p><p></p><p>At 1x with my current cam I'll have a DoF of about 0.5mm (a guess) around f/8. That ain't much. If I close down to f/32, I have some 2mm. That still ain't much if you look at the size of an average bee.</p><p></p><p>Now instead of closing down and neurotically trying to get into the end-zone of my magnification, I shuffle slightly back and shoot at 0.5x. At f/8 now my DoF is also 2mm but if during the first I was shooting at let's say 1/250s shutter, by now shooting slightly further, I can use the 4 aperture stops required for f/32 and invest those in shutter. Now I can take the same shots, albeit half the magnification, and shoot at 1/4000s.</p><p></p><p>I can shoot a sharp shot at 1/4000s when drunk. And while tumbling down the stairs.</p><p></p><p>Head first.</p></blockquote><p></p>
[QUOTE="J-see, post: 418546, member: 31330"] Some more about the advantage of not shooting as close as possible. At 1x with my current cam I'll have a DoF of about 0.5mm (a guess) around f/8. That ain't much. If I close down to f/32, I have some 2mm. That still ain't much if you look at the size of an average bee. Now instead of closing down and neurotically trying to get into the end-zone of my magnification, I shuffle slightly back and shoot at 0.5x. At f/8 now my DoF is also 2mm but if during the first I was shooting at let's say 1/250s shutter, by now shooting slightly further, I can use the 4 aperture stops required for f/32 and invest those in shutter. Now I can take the same shots, albeit half the magnification, and shoot at 1/4000s. I can shoot a sharp shot at 1/4000s when drunk. And while tumbling down the stairs. Head first. [/QUOTE]
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Macro help with focus and DoF
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