Viewfinder Mask for Contax 645 (44x33)

This is a mask for the viewfinder screen for the CONTAX645 system. This listing is for a mask for a sensor size of 44x33, as shown in the first photo. (The second and subsequent photos show different patterns, but are intended to demonstrate how it looks when 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 parts, I made this myself. As I found that it could be mass-produced, I am offering this handmade item in the hope that it will be useful to 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, please hold it by the edges and handle it carefully to avoid fingerprints as much as possible.

The second and subsequent photos are examples of the mask attached.
You will receive two viewfinder masks.
The intended method of attachment is to hook it onto the protruding part of the frame on the back of the viewfinder screen, or to attach it by cutting thin double-sided tape and applying it to the frame.

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 include:
- Phase One IQ140/150/250/350/P40+/P30+/P21+/P30/P21
- Leaf Credo 40/ Aptus-II 6,8
and others.