Lens Rear Cap GK-R2 for Contax G (Biogon)

• Depth for protruding rear elements: On the Hologon 16mm and Biogon 21mm, the glass extends far out of the lens — the deep GK-R2 design maintains clearance and prevents contact.
• Suitable from wide-angle to telephoto: Compatible with Contax G lenses from the Hologon 16mm to the Vario-Sonnar 35-70mm, as well as standard focal lengths such as the Planar 45mm and Sonnar 90mm.
• Replacement for the rare original cap: Replacement parts for the Contax G system are difficult to find and often expensive.

Compatibility

• Carl Zeiss Hologon T* 16mm f/8
• Carl Zeiss Biogon T* 21mm f/2.8
• Carl Zeiss Biogon T* 28mm f/2.8
• Carl Zeiss Planar T* 35mm f/2
• Carl Zeiss Planar T* 45mm f/2
• Carl Zeiss Sonnar T* 90mm f/2.8
• Carl Zeiss Vario-Sonnar T* 35-70mm f/3.5-5.6

What's included

1x rear lens cap (GK-R2 design)

Technical details

• Material: technical plastic
• Color: Black
• Mount: Contax G bayonet mount

Description

This rear lens cap is designed for the Contax G system and based on the deep GK-R2 design. This is crucial for the series' wide-angle lenses, whose rear elements extend far into the housing — the cap provides enough clearance to prevent scratches on the glass.

It also fits standard focal lengths such as the Planar 45mm and Sonnar 90mm.