Zeiss Biogon T* 35mm f/2 ZM - Leica M

The Zeiss Biogon T* 35mm f/2 ZM is a fast 35mm prime lens with an f/2 maximum aperture, designed for Leica M-mount cameras, built on the classic Biogon optical formula known for its distortion-free rendering and high contrast across the frame.

Key Specifications

• Focal length: 35mm (prime)
• Maximum aperture: f/2
• Lens type: Standard
• Mount: Leica M (mirrorless compatible)
• Optical design: Biogon — a symmetric, retro-focus-free design that naturally minimises distortion
• Coating: Zeiss T* anti-reflective multi-coating for flare control and contrast
• Build: All-metal construction typical of the ZM series
• Use cases: Street, travel, everyday allround photography
• Compatibility: Fits all Leica M-mount bodies; also usable on mirrorless cameras via M-mount adapter
• Warranty: Minimum 12 months warranty included

What makes the Zeiss Biogon T* 35mm f/2 ZM special?

The Biogon T* 35mm f/2 ZM sits at the top of Zeiss's ZM Biogon family — it's the fastest lens in that optical lineage. The Biogon design is inherently different from retrofocus constructions: because of its symmetric optical layout, it produces virtually zero distortion without needing software correction. Straight lines stay straight, which matters a lot in architectural details and street scenes where barrel or pincushion distortion would be distracting.

The T* coating is Zeiss's signature anti-reflective treatment. It keeps flare in check even when shooting into light sources — something street and travel photographers run into constantly. Resolution and contrast are strong edge-to-edge, and at f/2 the lens is genuinely usable wide open, not just at stopped-down apertures.

Compared to the Zeiss C Biogon T* 35mm f/2.8 ZM, the f/2 version gives you a full stop of extra light — useful in dim interiors, late-evening streets, or any situation where you'd rather not push ISO. The f/2.8 sibling is slightly smaller and lighter, so there's a real trade-off depending on how much you value portability versus low-light reach.

The comparison people keep coming back to is the Leica Summicron 35mm f/2. Multiple sources indicate the Biogon holds its own optically against classic Summicron versions, with some reviewers placing it ahead in resolution and flare resistance. The Summicron Aspherical and newer variants are closer competitors, but the Zeiss consistently comes in at a friendlier price point — especially on the used market. If you're weighing it against the Leica Summicron 35mm f/2 and optical performance matters more to you than the Leica badge, the Biogon is worth serious consideration.

Other lenses in the 35mm Leica M space include the MS-Optics 35mm 1.4 Apoqualia and the Leica Summicron 35mm f/2 v4. Each has its own character; the Biogon's appeal is its neutral, high-fidelity rendering rather than a heavily stylised look.

Who is the Zeiss Biogon T* 35mm f/2 ZM for?

This lens suits photographers who shoot with rangefinder bodies and want a 35mm prime that performs without excuses. Street photographers get an f/2 aperture that handles low light without forcing a tripod, combined with a compact enough profile that the lens doesn't attract unwanted attention. The near-zero distortion also means architectural and travel shots look accurate straight out of camera.

Travel photographers who keep their kit light will appreciate the all-metal ZM build — it's solid without being enormous. The 35mm field of view is one of the most versatile focal lengths for documenting places and people naturally.

If you shoot a Leica M body and have been eyeing the Summicron but find the price gap hard to justify, a used Biogon T* 35mm f/2 ZM is a practical alternative that doesn't feel like a compromise. It also works on any mirrorless body via an M-mount adapter, so Sony, Nikon, or Fujifilm (Fuji) users exploring manual-focus Leica glass can bring this lens into their kit too.

It's less suited to anyone who needs autofocus, image stabilisation, or a lens that handles video coma smoothly at wide apertures — the ZM series is uncompromisingly manual and built for deliberate, considered shooting.

Buying a used Zeiss Biogon T* 35mm f/2 ZM

The ZM series is built from metal throughout, which means it ages well mechanically. When buying a second-hand Biogon 35mm f/2 ZM, a few things are worth checking:

• Aperture blades: Look for oil on the blades. Even small amounts of oil can cause blades to stick and affect exposure consistency. Ask for a photo or video of the aperture actuating.
• Focusing helicoid: Should feel smooth and damped, not gritty or loose. Rangefinder lenses get a lot of focusing use, so wear here is more common than on a camera lens used with autofocus.
• Front element: T* coating is durable, but check for cleaning marks. Fine swirls under harsh light can reduce contrast wide open.
• Rangefinder coupling: If you're mounting this on a Leica M body with the rangefinder, confirm focus coupling is accurate at close distances — this can drift if the lens has been dropped or heavily used.
• Cosmetic wear: Brass showing through the paint on the barrel is normal for well-used ZM lenses and doesn't affect optical performance. It's a character mark, not a defect.

Every pre-owned lens on Camera-tweedehands.nl is individually photographed and professionally inspected, and comes with a minimum 12 months warranty. The exact warranty period is shown on the variant listing.