the last word

Photography meets digital computer technology. Photography wins -- most of the time.

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Optimal step sizes for macro photography using a rail

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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]

Goldilocks and the three flashes

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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]

Why I use medium format

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There was a recent survey on DPR that asked the title question and several related ones. Some of the answers were interesting, and inspired me to write this post about my reasons. First, some history. I first started using medium format in 1949. I was six years old, and my mother and father gave me… [Read More]

Of fidelity, photography, audio, and wine

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On the DPR Medium Format Forum, a poster has advocated for use of the term “image fidelity” as a scalar description of photographic technical quality. He has referenced the term “high fidelity” in audio as an analog and an exemplar. I am unconvinced that this new terminology offers any advantages over the conventional term “image… [Read More]

Unless otherwise noted, all images copyright Jim Kasson.