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<blockquote data-quote="Blade Canyon" data-source="post: 673867" data-attributes="member: 15302"><p>One thing you can do by yourself is to find the sharpness "sweet spot" for each lens. I used to believe that higher f-stop meant a sharper picture because of a larger depth of field, but then I discovered that really small apertures can be less sharp because of the way light bounces off of the aperture blades.</p><p></p><p>Basically, just put the camera on a tripod and set a fixed ISO. (Don't use auto-ISO because the added noise will decrease sharpness.) Shoot a brightly lit target at every f-stop on your lens, then zoom in and compare. For most lenses I found the sharpest spot to be somewhere between f 7 and f 11. Here's an example I shot on a 50mm lens:</p><p></p><p></p><p>[ATTACH]291418[/ATTACH]</p></blockquote><p></p>
[QUOTE="Blade Canyon, post: 673867, member: 15302"] One thing you can do by yourself is to find the sharpness "sweet spot" for each lens. I used to believe that higher f-stop meant a sharper picture because of a larger depth of field, but then I discovered that really small apertures can be less sharp because of the way light bounces off of the aperture blades. Basically, just put the camera on a tripod and set a fixed ISO. (Don't use auto-ISO because the added noise will decrease sharpness.) Shoot a brightly lit target at every f-stop on your lens, then zoom in and compare. For most lenses I found the sharpest spot to be somewhere between f 7 and f 11. Here's an example I shot on a 50mm lens: [ATTACH=CONFIG]291418._xfImport[/ATTACH] [/QUOTE]
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