Fujifilm GF 110mm f/2 Focus Shift Evaluation and Mitigation: Deck and Roof (GFX100S)
Related: Fujifilm, Fujifilm GF 110mm f/2 R LM WR, Fujifilm GFX100S, Fujifilm Lenses, Fujifilm medium format, Fujifilm mirrorless, medium format, optical focus shift, rearward focus shift
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.
Fujifilm GF 110mm f/2 Focus Shift Evaluation and Mitigation: Deck and Roof (GFX100S)
Includes crops and commentary and mitigation strategy.
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]
