Sensor size and diffraction.

Tom Axford wrote:

ProfHankD wrote:

No, Bob's right: you need a well-specified resolution reference to give a CoC (circle of confusion), and that can be taken either by pixel dimensions or by approximating human visual acuity for a specific print size and viewing distance.

Well, you seem to want to re-open that argument. I'm not biting, I stick by what I said. We have been through it all before!

While we are posting things not in any way salient to the discussion...   I'm going to let my photography do the talking.   With micro-photography, managing the overall resolution is pretty much the only consideration.   You guys posting cut and past from Google I'm Feeling Lucky searches is rather boring, especially when you get it wrong.  Post something that demonstrates you know what you are talking about.

The FoV is about 3mm wide.

FoV is about 3mm wide.

In terms of diffraction, the following was created by placing two of these tiny, fine patterned  honeycomb metal screens about 3mm apart.  The FoV is about 4mm wide.   The image below is the screen BEHIND the front most screen.  So we are seeing through the front most screen.  The image of the rear screen is rather intact, however the diffraction caused by the front most screen creates the fine honeycomb pattern.

FoV about 4mm wide.

Yeah, so why view diffraction limited performance from a technical perspective when you can cut and paste stuff from the Internet?

At least if I am going to post stuff that has nothing to do with the discussion, its my own work.  Well, except for the Sponge Bob thing.