Big Viewfinder Custom Housings for 28mm 38mm 42mm 60mm focal lengths

Print settings are up to you, there are no special settings needed. They are designed to not require supports if you print with the long part of the body facing up. Print on a textured bed as that surface will be the front of the VF. Each viewfinder housing consists of a body and a rear cap.

I created these to avoid the high prices on Mamiya Press viewfinders. Honestly, this approach will give you a more accurate field of view than all of the Mamiya Press finders. 

These VF housings let you use big bright viewfinders from certain cheap point and shoot cameras. They require surgically removing the viewfinder assembly of the donor camera. You want to retain whatever structure the original vf lenses are housed in within its donor camera. Some cutting of plastic will be needed in most cases, but can be accomplished with flush cutters, razor blades, and patience. Rotary tool is highly recommended, though.

28mm Big Viewfinder
Donor camera: Minolta Memory Maker 2000
Will be suitable for the following Lenses & Formats:
- 50mm on 6x7 (26mm equiv)
- 75mm on Instax Wide (27mm FF equiv)
- 75mm on Packfilm (28mm FF equiv)
- 65mm on 6x9 (28mm FF equiv)
- 65mm on 6x8 (30mm FF equiv)
- 50mm on 645 (32mm FF equiv)
- 75mm on 6x9 (32mm FF equiv)
- 90mm on Instax Wide (33mm FF equiv)
- 65mm on 6x7 (33mm FF equiv)
- 90mm on Packfilm (34mm equiv)

38mm Big Viewfinder
Donor camera: Minolta AF-E II
Will be suitable for the following Lenses & Formats:
- 100mm on Instax Wide (36mm equiv)
- 100mm on Packfilm (38mm FF equiv)
- 75mm on 6x7 (39mm FF equiv)
- 90mm on 6x9 (39mm equiv)

42mm Big Viewfinder
Donor camera: Vivitar BigView BV35 (not BV30)
Will be suitable for the following Lenses & Formats:
- 65mm on 645 (42mm FF equiv)
- 90mm on 6x8 (42mm FF equiv)
- 100mm on 6x9 (43mm equiv)
- 127mm on Instax Wide (46mm equiv)

60mm Big Viewfinder
Donor camera: Instamatic X-35
Will be suitable for the following Lenses & Formats:
- 90mm on 6x6 (58mm FF equiv)
- 100mm on Insta Square (58mm FF equiv)
- 127mm on Polaroid 600/SX70 (58mm FF equiv)

NOTE: All equivalents are horizontal so be mindful of top/bottom cropping based on ratio.