Hasselblad B50
A 50mm bayonet filter mount used on early C-series lenses of the Hasselblad V system
Overview
The Hasselblad B50 is not a camera or a lens. It's a 50mm metal bayonet filter mount used on C-version lenses of the Hasselblad V system. It's also known as Bay 50, and it was designed for filters, lens hoods and close-up lenses. You find it on lenses such as the ZEISS PLANAR 80mm f/2.8 C and the Zeiss Sonnar 250mm f/5.6 C. Later CF versions of these lenses moved to the larger B60 bayonet mount, so the B50 belongs to the earlier V-system accessory standard.
Specifications
| Product type | Filter adapter ring size for the Cokin System A filter system |
| Mount type | B50 bayonet (metal 50 mm Bayonet) |
| Compatible lenses | ZEISS PLANAR 80mm f/2.8 C, Zeiss Sonnar 250mm f/5.6 C |
| Successor mount | B60 (on CF lens versions) |
Design
The B50 is a metal bayonet mount on the accessory thread of Hasselblad V system C lenses. It takes original Hasselblad haze filters, color correction filters, lens hoods and close-up lenses. It also works with adapter rings from the Cokin System A, which lists Hasselblad B50 among its available diameters.
Context
The B50 mount was part of the early accessory lineup for the Hasselblad V system. The larger B60 bayonet replaced it on CF-series lenses, which meant bigger filter diameters. The B50 stays tied to the C lenses produced from the late 1950s onward.
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