Copal Shutters

Copal shutters for large-format photography lenses

Manufactured in Japan by the Copal Company LTD since 1946, Copal shutters are widely used on large-format photography lenses. Fully mechanical, very reliable lens shutters, they are quite repairable by many technicians all over the world.

Copal Shutters specifications

COPAL LENS SHUTTER 0 1 3
Weight 115gr 160gr 340gr
Outer diameter 61mm 73mm 102mm
Lens mounting Front: M 29.5mm x 0.5
Rear: M 29.5mm x 0.5
Front: M 40mm x 0.75
Rear: M 36mm x 0.75
Front: M 56mm x 0.75
Rear: M 56mm x 0.75
Cable release nipple M 3.2mm x 0.5 M 3.2mm x 0.5 M 3.2mm x 0.5
Shutter speeds T, B, 1, 2, 4, 8, 15,
30, 60, 125, 250, 500
T, B, 1, 2, 4, 8, 15,
30,60, 125, 250, 400
T, B, 1, 2, 4, 8, 15,
30, 60, 125
Shutter speeds tolerance +- 30% +- 30% +- 30%
Maximum iris opening 24mm 30mm 45mm
Minimum iris opening 1.5mm 2mm 2mm
Number of iris blades 5 7 7
Synchronization all shutter speeds all shutter speeds all shutter speeds
Max. sync delay times before max. opening: 0.5ms
after max. opening: 0.7ms
before max. opening: 0.5ms
after max. opening: 0.7ms
before max. opening: 0.5ms
after max. opening: 0.7ms
Threaded mounting ring M 32.5mm x 0.5 M 39mm x 0.75 M 61mm x 0.75