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ZEISS Ikon Biogon T* ZM 2.8/25 Wide-Angle Camera Lens for Leica M-Mount Rangefinder Cameras, Silver

TLDR Review: ZEISS Ikon Biogon T* ZM 2.8/25 Lens

Item: ZEISS Ikon Biogon T* ZM 2.8/25 Lens
Author: ShopSavvy

By ShopSavvy Team

Published: February 22nd, 2026

Pros

•Delivers excellent 3D pop and vibrant, saturated colors comparable to much highend lenses.
•Boasts exceptional glass quality that users highly praise for sharp, vivid images.
•Sharp corneo-corner performance with only some typical wide-angle vignetting.
•Features tootch build quality and craftsmanship, rivaling Leica optics but at a significantly lower price.
•Balances well on Leica ount cameras for comfortable handling and steady shooting.
•Offers a moderate widngle perspective ideal for Leica M8 digital and M-mount film cameras, wider than a 35mm but not extreme.
•Exhibits strong macrontrast that enhances image depth, though micro-contrast is slightly less pronounced than Leica’s own lenses.
•Matches Leica M8’s narrow 24mm viewfinder frame well when shooting scenes beyond a few meters.
•Pairs nicely as a complementary lens with longer focal lengths like a Summicron 50mm when used on Leica MP bodies.
•Represents outstanding value for photographers seeking quality widngle glass without the Leica price tag.

Cons

•The focusing ring is tight and requires careful, precise adjustment—may not be ideal if you prefer a looser, smoother focus action.
•Typical widngle lens vignetting is present, which might bother pixel peepers looking for perfection in every corner.
•Slightly less microntrast than Leica’s native lenses, so if ultra-critical contrast rendition is a must, this might be a minor downside for you.

Bottom Line

If you’re after a wide-angle Leica M-mount lens that delivers top-tier optical quality with beautiful color rendition and 3D-like image pop — but without the Leica price tag — the ZEISS Ikon Biogon T* ZM 2.8/25 is a fantastic choice. It offers superb build and image quality with only minor quibbles like a tight focus ring and some typical vignetting. For those who prioritize ultimate micro-contrast or ease of focusing, sticking to Leica glass may be worth considering. Otherwise, this lens delivers impeccable value and stunning results for Leica shooters.