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Fujifilm GF 110mm f/2 Focus Shift Evaluation and Mitigation: Deck and Roof (GFX100S)

The Fujifilm GF 110mm f/2 R LM WR is a troubled lens because of its rearward focus shift, making it difficult to reliably obtain optimal sharpness, particularly on a 100-megapixel sensor.

This page shows dual sets of crops, each focused slightly differently. One series is front-focused for f/2, which means poor f/2 results in the nominal plane of focus, but combined with focus shift results in far superior results at f/2.8 and beyond. The other series shows ideal focus for f/2, which delays sharpness all the way to f/8.

By comparing these two series crops, even the skeptic can quickly see that focus shift is a thing, and that it can make a big difference in total sharpness. Photographers looking for optimal results should study these findings and follow the recommendations for mitigation.

In diglloyd Medium Format:

Fujifilm GF 110mm f/2 Focus Shift Evaluation and Mitigation: Deck and Roof (GFX100S)

Includes crops and commentary and mitigation strategy.

CLICK TO VIEW: Gear used here, and related

Focusing Headaches make even stone frogs grumpy
f2 @ 1/25 sec, ISO 100; 2022-08-14 19:49:45
Fujifilm GFX100S + Fujifilm GF 110mm f/2 R LM WR @ 90.5mm equiv (110mm)
RAW: LACA corrected, vignetting corrected, +20 Whites, +10 Clarity

[low-res image for bot]

 


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