Photo Art from Science

How to measure your lens actual focal length and its field of view. Manufacturers can fudge these numbers, but you can find the truth.

I found a bug in the Nikon Z8, Z9 firmware. Pinpoint AF gets ignored when you assign a button to Cycle AF-area mode in the Custom controls.

Comparison of focus consistency between a DSLR (Nikon D850) and a mirrorless Nikon Z8. Accurate focus equals high resolution, so it matters.