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henrikl
Joined: 23 Aug 2008
Posts: 262
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Posted: Fri Nov 06, 2009 3:20 pm
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I just got my batch rejected for bad focus. I think i used f-25 for the shots. Could that be it? The subject was buns and sweets. Would it be sharper if i went down to f-18 or something like that. Anyone know better than me?
Thanks a lot. |
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davidcrehner
Joined: 20 Jul 2005
Posts: 4176
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Posted: Fri Nov 06, 2009 6:07 pm
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The threshold for diffraction will also depend on the camera (crop/full frame, as well as resolving ability of the sensor).
In terms of just sharpness, my 100mm macro on my old 40D was sharpest around f/8. However, you may be willing to sacrifice some sharpness for more DOF. It's a tradeoff.
I try not to go past f/16 for sharpness's sake, and if I need more DOF and it's possible, I'll do focus stacking. |
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henrikl
Joined: 23 Aug 2008
Posts: 262
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Posted: Fri Nov 06, 2009 6:45 pm
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| davidcrehner wrote: | The threshold for diffraction will also depend on the camera (crop/full frame, as well as resolving ability of the sensor).
In terms of just sharpness, my 100mm macro on my old 40D was sharpest around f/8. However, you may be willing to sacrifice some sharpness for more DOF. It's a tradeoff.
I try not to go past f/16 for sharpness's sake, and if I need more DOF and it's possible, I'll do focus stacking. |
Thanks! I use Canon 5D MKII but maybe its the same thing about sharpness. Lessorn learned. Ill try again tomorrow! Many thanks! |
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sima
Joined: 09 Sep 2007
Posts: 322
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sima
Joined: 09 Sep 2007
Posts: 322
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