Re: The main (theoretical) differences between APS-C and Full-Frame?
Robin Smith wrote:
Yes to Chiron. The same logic applies to m43. There you get effectively two stops of extra depth of field and 2 stops worse noise, but counterbalancing this, because most shots require more rather than less depth of field (unless you are obsessed with shooting at f1.4 for everything) you gain back the 2-stops of light because you can open the lens up two stops for the same depth of field. Only when you are at the limits of ISO sensitivity does the FF advantage come to the fore (in very dim environments and you have a requirement to stop action so have to set a fast shutter speed).
This is incorrect. A smaller sensor does not give you more depth of field, because a crop sensor lens is softened by diffraction at lower apertures.
Shooting at f11 on FF and f5.6 on MFT gives the same depth of field and the same level of diffraction. You normally don't want to shoot at more than f4 on a MFT for this reason.
All in all, you do not gain anything with a crop sensor aside from it being cheaper.
Re: The main (theoretical) differences between APS-C and Full-Frame?
Robin Smith wrote:
Yes to Chiron. The same logic applies to m43. There you get effectively two stops of extra depth of field and 2 stops worse noise, but counterbalancing this, because most shots require more rather than less depth of field (unless you are obsessed with shooting at f1.4 for everything) you gain back the 2-stops of light because you can open the lens up two stops for the same depth of field. Only when you are at the limits of ISO sensitivity does the FF advantage come to the fore (in very dim environments and you have a requirement to stop action so have to set a fast shutter speed).
This is incorrect. A smaller sensor does not give you more depth of field, because a crop sensor lens is softened by diffraction at lower apertures.
Shooting at f11 on FF and f5.6 at MFT gives the same depth of field and the same level of diffraction.
All in all, you do not gain anything with a crop sensor.
Jun 29, 2023 at 08:26 PM
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