Quote:
Originally Posted by toyota74
one more thing to do with fstops in apeture....will an increase in say fstop 11 to 22 slightly decrease image quailty..thought I
saw this on a site but couldnt find it again and its bugging me
|
I think mentioned this right in this thread, didn't I?
I think if you look int his thread you can find it somewhere. Maybe this is where you heard it.
Basically every lens has a limit to how far you can decrease F-stop before loss of sharpness due to diffraction starts:
my Olympus C-7070 - F4.0
Four-Thirds / Micro Four-Thirds - F8.0
APS-C (eg. Canon EF-S) - F11
35mm / Full Frame - F16
Not exact numbers but you get the idea. Remember diffraction depends on the lens, not the body and sensor size. That chart i_am_hydrogen posted is most likely for 35mm/full frame, as you can see loss of sharpness starts past F16.