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Message: <blockquote data-quote="J-see" data-source="post: 361944" data-attributes="member: 31330">There's times trying to get more DOF is a good idea but there's times it is an exercise in futility. At least that's how I experience it in macro.Earlier today I was working at my five and three quarter-legged spider shot when I noticed I used f/8. I wondered if it had made much difference if I had closed down. It's shot at about 1:1 which implies I have a DOF of around 0.5mm at f/8. At f/32 it would be around 2.0mm. While that's 4 times as much, in reality it is less impressive since it's but a difference of 7.5% depth assuming the spider to be around 20mm lengthwise.Would that 7.5% have made a better shot? Maybe it would but maybe not. Is that 7.5% worth closing down the little light there was? Certainly not.Now admittedly when the subject-sensor size is different, stopping down might be the best approach. The smaller, the larger the effect of the same DOF. When decreasing the X-factor the same is true but I prefer to do that only when really needed. I didn't spend all this money to make a 1:1 do what a 100$ 1:2 lens can do too.About diffraction I care less. I experience my image breaking down when I up the ISO while closing down the lens. We're talking 800+ here. Then the image becomes fuzzy. The cause could be me too. Whatever it is, that range no longer works for me.Yes I know, flash and such but me -angry smilie- flash. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink    ;)" loading="lazy" data-shortname=";)" /></blockquote>

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