Angenieux 35mm f2.5 Retrofocus Type R1 for M42 back Development time starting points are

Development time starting points are 7 minutes for stock and 10

3/8" fitting in the base (with 1/4" adapter) for tripod mounting

with accurate shutter speeds

The Rollei P37E is a slide projector for 35mm slides

It features a sturdy metal housing with geared focus and diaphragm controls and an internal-focus design that minimizes focus breathing

Angenieux 35mm f2.5 Retrofocus Type R1 for M42 back Development time starting points areThe Angenieux 35mm f2. 5 Retrofocus Type R1 is an uncommon wide angle lens for the M42 thread mount. This one is in good condition, with light cosmetic wear, slightly stiff (though smooth) focusing, and only light oil on the diaphragm. Glass has light haze and minor dust. Includes front and rear caps, plus original box.