Thread mount SLR lenses for M39x1 rangefinder cameras

I have two adapters for thread mount SLR lenses. Both are serial products, both are for mounting on M39x1/28.8 cameras.

First (on the right) is the rare adapter for the popular M42x1/45.5 SLR mount. Its length is 16.7mm.

Second (on the left) is an adapter for the much less popular M39x1/45.2 SLR mount (lenses made in the USSR for early Zenit cameras). Its length is 16.4mm.

Theoretically, there could be an adapter for the M40x1/44 SLR lens (for the old Praktiflex cameras) with a length of 15.2mm. But I have never seen a serial product (without 3D printing etc.). I use a combination of different adapters to mount these lenses on the M39x1/28.8.

See also related notes:

• M42x1-M39x1 adapter (16.7mm) (2024-03-20)
• Praktiflex M40x1 lenses on modern cameras (2023-08-25)
• M39x1/45.2 (SLR) lens list (2023-08-05)
• Использование объективов M39x1 на цифровых камерах (2022-05-18)

Image albums:

• Lens accessories