Recent content by eradman

Leaf shutter lenses and 120 back sold

There is a "Mamiya 645 Pro Mirror replacement" model on Thingiverse https://www.thingiverse.com/thing:3728937?fbclid=IwAR1g7Ev1Wr7JzvxsVekPw0o3IlPkNleHaUQ1IEa4IU0EveqgdqctIJ17hLE

Mamiya 645 Pro with 80mm f/2.8N lens, 120 back WG401 power winder, Finder N: $550 [photos] - 80mm f/2.8N lens is sharp and focus throw is very smooth - 120 back Included - WG401 power winder - WL Finder N (has very slight rust) Mirror stop has been replaced with a 3D printed part made of PA12...

Yes, although with bracketed exposure to provide more flexibility in processing (shooting JPEG fits my workflow better than RAW)

I'd say you are figuring this correctly. (500 ml to develop 4 rolls) Looking at the Arista E-6 instructions we can see that the number of rolls you can process corresponds with the amount of developer - 135 (24 exp.) 135 (36 exp.) 120 Rolls / 960ml (32 oz) 12 8 8 Rolls / 480ml (16 oz) 6...

Sure, here is a test "scan": http://raticalphotography.com/articles/images/macro_aperature_test_f8.png (film is 645, HP5+)

About focus: the choice between manual and autofocus should probably be based on the equipment you have. I usually use autofocus (Fuji X-E4 + XF 60mm f/2.4 ASPH)

In my experience: Run a series of experiments to find the best aperture (at close focus your effective aperture is increasing and depth of field is very thin) Use your camera's native ISO Invest in a macro lens to minimize distortion Use a solid surface to and self-timer to minimize vibrations...