Pocketable Ultra-Wide Wonder: Funleader 18mm f/8 Pro Review

The Funleader Cap Lens Pro (18mm f/8) is a tiny, ultra-wide pancake lens that marries playfulness with practicality—available for Sony E, Fuji X, and Leica M mounts. Unlike the original fixed-focus body-cap design, this "Pro" version adds an adjustable focus dial (0.3 m, 0.5 m, 0.7 m, 1 m, 2 m, infinity) and comes in a sleek metal body with toned-down branding.

Its optical layout remains unchanged from the earlier model (6 elements in 5 groups). On both Sony A7rII and Leica M10, the lens offers a hyperfocal focus performance—with center sharpness okay but noticeably soft edges, plus heavy vignetting and pronounced color casts.

among the most wavy and dramatic seen in ultra-wides, and flare resistance is poor due to the fixed aperture design.

Scene files require post-processing to correct corner shading and color imbalances, but the lens’s compact form and low price point (around £100) make it an intriguing toy for creative photography.

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