Help a novice: sharp or unsharp images? Should I return my X-T30?

Started 3 months ago | Discussions thread
photonut2008
photonut2008 Veteran Member • Posts: 6,088
Re: Lens testing
1

D Cox wrote:

photonut2008 wrote:

ChelseaPhotographer wrote:

An APS-C camera can only resolve so much,

Care to elaborate on that? I was doing the math the other day and came up with about 340 MP to fully resolve f/4 on a DX sensor versus 181 MP to fully resolve f/5.6 on an FX sensor, that is what would be required before a theoretically perfect lens would be diffraction limited.

An APS-C sensor is most likely to have 4000 x 6000 pixels, so it can resolve only 2000 line-pairs per image height.

Then the clarification would be current APS-C sensors can "only resolve so much."

It probably has a colour mosaic, which will almost halve that.

That's not accurate, and it depends on the colors you are photographing.

A good prime lens will generally resolve finer detail than the APS-C sensor can record.

Same is true for a 135 format sensor.

Depth of field and subject movement are major causes of blur.

Not when photographing brick walls.

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