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General Photography
Macro
1:1 at f/36 Versus 1:2 at F/8 Cropped
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<blockquote data-quote="J-see" data-source="post: 424275" data-attributes="member: 31330"><p>Let's do this different. We don't need to wonder if DoF is identical at 0.5X*f/8 and 1x*f/32 since that's easy to calculate. The only question is if an image scaled larger would lose more or less quality than closing down does.</p><p></p><p>There's a much easier approach to that which doesn't require secure positioning of the cam and measuring distances since the DoF is that small, anything done wrong can have massively different results.</p><p></p><p>All we need is this:</p><p></p><p>[ATTACH]143715[/ATTACH]</p><p></p><p>[ATTACH]143716[/ATTACH]</p><p></p><p>[ATTACH]143717[/ATTACH]</p><p></p><p>[ATTACH]143720[/ATTACH]</p><p></p><p>[ATTACH]143721[/ATTACH]</p><p></p><p></p><p>This is purely about the effect scaling has on the quality of our original shot. About all of these have been subjected to different scaling permanently affecting them and their quality. None has been changed at any other level, no exposure adjustments or additional sharpening. Only scaling algorithms have been at play.</p><p></p><p>Pick your best but select carefully since I am aware of every bias at play during this sort of selection and how to get around them. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p><p></p><p>Anyone can still cheat but it'll require effort.</p><p></p><p>I used the prehistoric version of PS I have on this PC. It's not the best approach possible to scaling.</p><p></p><p>That'd be something like this: <a href="http://www.alienskin.com/blowup/blow-up-examples/" target="_blank">Blow Up Examples - Alien Skin Software</a></p></blockquote><p></p>
[QUOTE="J-see, post: 424275, member: 31330"] Let's do this different. We don't need to wonder if DoF is identical at 0.5X*f/8 and 1x*f/32 since that's easy to calculate. The only question is if an image scaled larger would lose more or less quality than closing down does. There's a much easier approach to that which doesn't require secure positioning of the cam and measuring distances since the DoF is that small, anything done wrong can have massively different results. All we need is this: [ATTACH=CONFIG]143715._xfImport[/ATTACH] [ATTACH=CONFIG]143716._xfImport[/ATTACH] [ATTACH=CONFIG]143717._xfImport[/ATTACH] [ATTACH=CONFIG]143720._xfImport[/ATTACH] [ATTACH=CONFIG]143721._xfImport[/ATTACH] This is purely about the effect scaling has on the quality of our original shot. About all of these have been subjected to different scaling permanently affecting them and their quality. None has been changed at any other level, no exposure adjustments or additional sharpening. Only scaling algorithms have been at play. Pick your best but select carefully since I am aware of every bias at play during this sort of selection and how to get around them. ;) Anyone can still cheat but it'll require effort. I used the prehistoric version of PS I have on this PC. It's not the best approach possible to scaling. That'd be something like this: [url=http://www.alienskin.com/blowup/blow-up-examples/]Blow Up Examples - Alien Skin Software[/url] [/QUOTE]
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1:1 at f/36 Versus 1:2 at F/8 Cropped
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