Fujifilm GF 20-35mm f/4 Aperture Series @ 27mm: Icebergs in Dana Lake, View to Mt Dana

This series from f/4 to f/9 looks at sharpness across the field and near to far for the Fujifilm GF 20-35mm f/4 R WR on a finely detailed landscape scene. Also includes a 4-frame focus stack at f/9.

Fujifilm GF 20-35mm f/4 Aperture Series @ 27mm: Icebergs in Dana Lake, View to Mt Dana

Includes images up to full camera resolution.

The GFX100S Focus BKT feature failed (as nearly always) to produce a sharp INF frame, a frequent and tedious bug in the GFX100S. The BKT feature is still useful but it requires *always* shooting an INF frame if only to see if better results can be obtained (yes, 90% of the time). Luckily I had shot an aperture series with far-distance focus just prior to the Focus BKT stack, otherwise the stack would have been useless.

Icebergs in Dana Lake, View to Mt Dana

f9 @ 1/80 sec electronic shutter focus stack 4 frames, ISO 100; 2023-08-10 16:05:50
Fujifilm GFX100S + GF20-35mmF4 R WR @ 22mm equiv (26.7mm)
ENV: Data Lake 1, altitude 11200 ft / 3414 m, 58°F / 14°C
RAW: Camera ASTIA, LACA corrected, vignetting corrected, WB 5200°K tint 21, push 0.4 stops, -40 Highlights, +30 Whites, +30 Dehaze, +10 Clarity, diffraction mitigating sharpening, SmartSharpen{30,0.7,0}

[low-res image for bot]