Bronica ETR series pinhole cap with interchangeable inserts

Recommended pinhole size for Bronica ETR series bodies is 0.35mm.

Pinhole cap available in following sets:

 Set #1 - Pinhole cap, 0.35mm pinhole insert

 Set #2 - Pinhole cap, 0.25mm, 0,35mm and 0.45mm pinhole inserts

 Set #3 - Pinhole cap, 0.30mm, 0,35mm and 0.40mm pinhole inserts

 Set #4 - Pinhole cap, 0.25mm, 0.30mm, 0.35mm, 0.40mm and 0.45mm pinhole inserts

 Lens cap - no pinhole - This is option to purchase Lens cap only without pinhole with M22 thread.

                                       Perfect choice if you have one of other Medium format or Large format sets from our other listings.

Focal length with 0.35mm pinhole is 63mm. F stop is 180. 

Pinhole was made from brass shim stock 0.001" or 0.0254mm thick.

Since this shim stock is extremely thin, it's possible to have some small wrinkles/curvature due to temperature variations.

I'ts normal and it doesn't affect image quality.

Pinhole cap and inserts are 3D printed from ABS for durability. 

Inserts thread size is M22. 

Focal length can be varied with extension tube or macro bellows. There are several online calculators and phone apps

that can be used to calculate optimal pinhole size for specific focal length and corresponding F stops.

Compatible with Bronica ETR, ETRC, ETRS, ETRSi

Camera not included in sale. Shown for illustration purposes only.

Lens caps also available in our other listings for following cameras Mamiya 645, Mamiya RB 67, Pentax 67,

Large format in Copal and Compur 0, Copal and Compur 1 and Copal and Compur 3.

You can acquire full set of pinhole sizes and use with with any of these adapters.

For Sinar and Speed Graphic there is lens board available with M22 threaded hole to use insert directly without adapters.