Threaded rings for lens shutters

For large-format cameras

Threaded retaining rings to mount Copal, Compur and Prontor lens shutters on large-format camera lensboards.
Made in brass and partially painted matte black on rear.
Available for lens shutter sizes #00, #0, #1, #3 and #3S. Also available for Compur 2, Compound 3, Compound 4, Seiko 1 and Ilex 5 lens shutters.

For vintage Compur 2 and Compound 3 shutters, lensboard adapters to fit Copal 3 lensboards are available on “Lensboard shutter adapters”.

For Copal lens shutter sizes

Threaded retaining ring for large-format #00 lens shutters with 25mm x 0.5 thread
for Compur 00 lens shutters
made to fit #00 drilled lensboards with 26.3mm diameter hole
EUR 10.00
Threaded retaining ring for large-format #0 lens shutters with 32.5mm x 0.5 thread
for Compur 0, Copal 0 and Prontor 0 lens shutters
made to fit #0 drilled lensboards with 34.6mm diameter hole
EUR 10.00
Threaded retaining ring for large-format #1 lens shutters with 39mm x 0.75 thread
for Compur 1, Copal 1 and Prontor 1 lens shutters
made to fit #1 drilled lensboards with 41.6mm diameter hole
EUR 12.50
Threaded retaining ring for large-format #3 lens shutters with 62mm x 0.75 thread
for Compur 3, Copal 3 and Prontor 3 lens shutters
made to fit #3 drilled lensboards with 65mm diameter hole
EUR 20.00
Threaded retaining ring for large-format #3S lens shutters with 61mm x 0.75 thread
for Copal 3S lens shutters
made to fit #3 drilled lensboards with 65mm diameter hole
EUR 20.00

For Compur 2 and Compound lens shutters

Threaded retaining ring for Compur 2-X Tube 5 shutters with 50mm x 29-1/13 thread
for Compur 2 lens shutters with 50mm diameter thread
made to fit lensboards with 52.5mm diameter hole
EUR 20.00
Threaded retaining ring for Compur 2-X Tube 6 shutters with 55.8mm x 29-1/13 thread
for Compur 2 lens shutters with 55.8mm diameter thread
made to fit lensboards with 58.3mm diameter hole
EUR 20.00
Threaded retaining ring for Compound 3-X Tube 7 shutters with 60mm x 29-1/13 thread
for Compound 3 lens shutters with 60mm diameter thread
made to fit lensboards with 62.5mm diameter hole
EUR 20.00
Threaded retaining ring for Compound 4-X Tube 9 shutters with 65.9mm x 29-1/13 thread
for Compound 4 lens shutters with 65.9mm diameter thread
made to fit lensboards with 68.4mm diameter hole
EUR 20.00
Threaded retaining ring for Compound 4-X Tube 10 shutters with 76.7mm x 29-1/13 thread
for Compound 4 lens shutters with 76.7mm diameter thread
made to fit lensboards with 79.2mm diameter hole
EUR 25.00

For Seiko lens shutter sizes

Threaded retaining ring for Seiko 1 shutters with 46mm x 0.75 thread
for Seiko 1 lens shutters with 46mm diameter thread
made to fit lensboards with 50mm diameter hole
EUR 18.00

For Ilex lens shutter sizes

Threaded retaining ring for Ilex 5 shutters with 2.988″ x 30 thread
for Ilex 5 lens shutters with 75.9mm diameter thread
made to fit lensboards with 78.5mm diameter hole
EUR 25.00


Contact for a custom made threaded ring or adapter for lens shutters