Re: Do you feel Sony should have a better flagship APS-C camera?
lsquare wrote:
deevee wrote:
Both FF and APSC use the same mount
If one needs a smaller body one buys the compact FF and use APSC lenses
If one doesn't need all the MPix then one uses crop mode
I'm not sure we even need APSC line
Sony is better off getting rid of APSC altogether and save the resources for FF
Make cheaper /smaller/more affordable FF for the APSC crowd
While continuing to improve upon the FF family
Voila
If I use an APS-C lens on a Sony FF body, I'm assuming vignette and corner sharpness of the APS-C lenses are mitigated by the larger sensor? Focal length in APS-C mode on an FF body is the same as if the lens was on an APS-C body?
Vignette and corner sharpness comes from the lens. When you use an APS-C lens on a FF body, you can either shoot in APS-C mode - in which case it will produce identical images to if you had shot on an APS-C body, vignetting and all (because you're just using the middle part of the sensor, an APS-C crop)... or you can tell the camera to try to shoot in full frame, and you will mostly get bad results. The outer parts of the frame, that the APS-C lens was not designed to cover, will be anywhere from badly to completely vignetted (blacked out) and there will be other image quality defects.
There are some rare exceptions to this. Some APS-C zoom lenses don't vignette too extremely, in part of their zoom range, when shot on FF. But it's always a compromise and still has its flaws. The image quality results with a full frame lens end up being better.
So the only really practical reason to use an APS-C lens on a full-frame body is to shoot it in APS-C crop mode, to make your total weight and size of your camera rig smaller (than it would have been with a full frame lens attached instead), while wasting the extra image quality a full frame image would have provided you. Sometimes that's a valid trade-off. It's never "better", as such.
What you were thinking of - "won't vignetting and corner sharpness be better?" - works in the opposite direction. In general, if you use a full frame lens on an APS-C body, it will have less vignetting and better "corner" sharpness (because the corner is, really, only the midframe of the lens. And the only exception to this rule is the few lenses that have a "midframe dip", because then that midframe becomes the corner).
Aug 25, 2024 at 05:09 AM
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