FF Camera APSC mode vs Cropping vs Downsampling

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jdominh Forum Member • Posts: 51
FF Camera APSC mode vs Cropping vs Downsampling

Hi guys,

A definite nerd question but I'm sure some of you will be able to reply. What will be the difference in sharpness/noise/dynamic range in the following scenarios?

1 - Shooting on a 45 Mpx camera on APSC mode with a 24mm f.1.4, ie ending up with 36mm focal length and 20 Mpx resolution

2 - Shooting on a 45 Mpx camera on FF mode with a 24mm f.1.4, then cropping in post to get the equivalent 20 mpx resolution

3 - Shooting a 45 Mpx camera on FF mode with 36mm at f2.1 in Medium image size internally, resulting in a 20 Mpx resolution

4 - Shooting a 45 Mpx camera on FF mode with 36mm at f2.1 in full image size internally, then downsampling to 20 Mpx in post

In all cases you end up with a 36mm FOV and 20 Mpx resolution but which method is the best for IQ?

Thanks!

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