Ephotozine Review: Z 100-400/4.5-5.6 S VR

Started Jan 25, 2022 | Discussions thread
JimKasson
JimKasson Forum Pro • Posts: 41,534
Re: A picture is worth a 1000 words

Leonard Shepherd wrote:

JimKasson wrote:

Here is an example of a lens outresolving a sensor, with a Nikon 180-400/4 wide open, set to 180mm, on a Z7, with crops from the center, the edges, and the corners.

The lens outresolves the sensor in all 9 locations.

Can you explain how the optical formula for calculating resolution should be updated?

I don’t think it needs updating, but I am not sure what formula you’re talking about. Please state it.

What I’m talking about is pretty much sampled imaging systems 101. Harry Nyquist made his discovery about 90 years ago.

Are you familiar with the concept of imaging systems Q? That informs the optimum matching of the resolutions of sensors and lenses.

https://blog.kasson.com/the-last-word/whats-your-q/

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