Finder Mask for Contax 645 (37x37)

This is a mask for the finder screen for the CONTAX645 system. This listing is for a sensor size of 37x37, as shown in the first photo. (The second and subsequent photos show different patterns, but are intended to demonstrate how it is attached.)

When using a medium format digital back, the sensor's shooting range is smaller than the original film size. By sandwiching this mask in the screen, you can use it as a guide for the actual shooting range.
Since it is difficult to obtain genuine manufacturer products, I made this myself. As I found that it can be mass-produced, I am making it by hand in the hope that it will be useful for others who have the same problem.

Please note that the material is weak to moisture and oil, so please be careful about contact with such substances. When attaching the mask, hold it by the edges and handle it carefully to avoid fingerprints as much as possible.

The second photo onwards are examples of attachment.
You will receive 2 finder masks.
The intended method of attachment is to hook it onto the protruding part of the frame on the back of the finder screen, or to attach it to the frame with thinly cut double-sided tape.

As this is a handmade item, please understand that returns and exchanges are not accepted, except for critical defects or incorrect sizing.

Representative compatible models for the 37x37 size include:
- Phase One P20+/P20/H20
- Kodak DCS Proback 645C