Contax 90mm f/2.8 Zeiss Sonnar T* Lens for G-Series, Titanium {46}

Zeiss Sonnar T* portrait glass in titanium finish.

The Contax G-series produced some of the sharpest 35mm rangefinder glass ever made for a consumer-accessible system, and the 90mm f/2.8 Sonnar T* sits at the top of that lineup. At f/2.8 on a 90mm focal length, you get real subject separation without the focus precision demands of a f/1.4 optic, a practical advantage whether you're shooting portraits or isolating detail in a tight architectural frame. The titanium finish matches the G1 and G2 bodies it was designed for, keeping the kit light and consistent.

Zeiss T* multi-coating was engineered to cut flare and ghosting in contrasty light, which matters when you're shooting outdoors against bright skies or under mixed artificial sources. The 46mm filter thread keeps front accessories small and affordable. This lens was built for an autofocus rangefinder system, so adapting it to modern mirrorless bodies requires a dedicated Contax G adapter, a well-documented path that gives digital shooters access to Sonnar rendering that no current manufacturer replicates at this price point.

Who It's For

Portrait photographers shooting with adapted mirrorless systems get a 90mm focal length and f/2.8 maximum aperture that produces the smooth, mid-telephoto compression Sonnar designs are known for. Film shooters running a Contax G1 or G2 get a native-mount pairing in the titanium finish that keeps the system cohesive. Street photographers who want a longer reach than the 45mm Planar, without stepping up to a bulkier telephoto, will find this focal length well-suited to candid work at a slight distance. Travel photographers prioritizing a compact kit benefit from the small 46mm filter thread and the titanium body's weight reduction.

Key Features

• 90mm focal length with f/2.8 maximum aperture for portrait work
• Zeiss T* multi-coating reduces flare and ghosting in high-contrast light
• Contax G mount designed for rangefinder autofocus systems
• 46mm filter thread keeps accessories compact and affordable
• Titanium finish matches G1 and G2 body aesthetics
• Sharp corner-to-corner performance across the aperture range
• Adapts to modern mirrorless bodies with dedicated G mount adapter

FAQ

What's the practical difference between this 90mm f/2.8 and faster portrait lenses?

At f/2.8 you get genuine subject separation on a 90mm focal length without the shallow depth-of-field focus precision demands of f/1.4 glass. It's the sweet spot for handheld portraiture and detail work where you want isolation without constant focus anxiety.

Does this lens work on modern mirrorless cameras?

Yes, with a Contax G adapter. The original G-series mount is rangefinder-only, but documented adapter paths exist for Sony E, Fujifilm X, and other mirrorless mounts. Autofocus won't function, but manual focus is straightforward on digital bodies with focus peaking.

How does Zeiss T* coating perform in difficult lighting?

T* multi-coating was specifically engineered to suppress flare and ghosting in high-contrast scenes - shooting against bright skies, backlit situations, or mixed artificial light. You'll notice cleaner contrast and fewer internal reflections compared to older uncoated or single-coated rangefinder glass.

Is the titanium finish just cosmetic?

It's matching aesthetics for G1 and G2 bodies, but titanium also resists fingerprints and corrosion better than standard black lacquer. If you're keeping the lens with a titanium Contax body, the consistency matters for field work.

What size filters does this take?

46mm threads. That's small enough to keep filter costs down and front-end weight minimal, and 46mm circular polarizers and ND filters have broad availability.

How sharp is this lens wide open at f/2.8?

Contax G-series lenses are known for corner-to-corner sharpness across their aperture range. The 90mm Sonnar T* maintains that standard - expect critical sharpness at f/2.8, not just at stopped-down apertures.

Can you use this on a Contax G1 or G2 body?

Yes, it mounts directly to either body. The titanium finish was designed for those cameras, so visually and optically they're a complete match.