the last word

I was bothered by the approximations that I made in yesterday’s post about what happens to dynamic range when you crop in camera with the GFX 100RF. So, today I went back and dusted off some Matlab code I’d written a few years ago to provide results with no approximations. I simulated the operation of… [Read More]

Fuji is recommending cropping as a method to ameliorate the limitations of a fixed lens in the GFX 100RF. That will affect dynamic range. Using some assumptions and approximations, I’ve calculated that, using Bill Claff’s Photographic Dynamic Range measurements from the GFX 100S. Here it is: The vertical axis is PDR in stops. The horizontal… [Read More]

As is often the case, the impetus for me to take keyboard in hand to click out this post is an exchange with a fellow photographer over the ‘net. In this case, the conversation went something like this: Someone else: “I am not a fan of MTF graphs.” Poster: “I look at real-world shots from… [Read More]

I’ve done a lot of work on how to set up the step sizes when you’re using the focus bracketing features built into the GFX cameras. https://www.lensrentals.com/blog/2023/02/how-your-cameras-focus-bracketing-system-works/ Now I’m doing macro work at greater than 1:1 magnification, and I need to do something similar so I can pick step sizes when using my Cognisys rail…. [Read More]

Once upon a time there were three bears, who lived together in a house of their own, in a wood. One of them was a Little Wee bear, one was a middle-sized bear, and the other was a great big bear. They had each a camera: a little Nikon Z50 for the little wee bear;… [Read More]