Image Quality you can see

Started 3 months ago | Discussions thread
SafariBob
SafariBob Senior Member • Posts: 2,590
Re: Image Quality you can see
2

dave92029 wrote:

There are numerous comments from those who own or want a high MP camera ie: a7Riii; A7riv, A1, etc. about how these cameras have "High Image" quality as compared to the new A7iv and all the rest.

I have a 4k monitor, but I don't have the display set to 4K because everything would be too small to read. I realize that even set at a lower resolution the detail is sharper than on a monitor capable of 1080p.

I also realize that the "extra" mp allow one to more easily "Crop" their raw image, but that is Not the same as "image Quality" is it?

Mark Galer, who I respect, comments that he Crops his raw images drown to 4K for presentation. The primary use/ benefit of a high MP image is in printing a Very Large poster. How many every do that? I never have.

4K is generally considered 3840 x2160 (8.3 MP), so isn't everything else usually being deleted.

One computer screen pixel = 3 or 4 camera pixels, so 8.3mp would require 24-32 mp camera to fully resolve. This because each screen pixel is composed of 3 different colours. Each camera pixel is one camera.

in practice people also want to be able to throw away half the image for editing purposes, hence the sweet spot around 40-60mp.

300 ppi is generally considered a high quality image, but doesn't Apple Retina screens usually only reproduce 264 ppi?

sure, hence if you want more than about 10 inch print, you really want as much resolution as possible.

How does very high MP cameras produce "better" image quality" than 24mp +???

they provide a margin of safety.

Thanks for your help

Dave

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