A simple and elegant tool for processing 4 x 5" sheet film, the SP-445 Compact 4 x 5" Film Processing System from Stearman Press is a straightforward system for developing up to four sheets of film at a time. Using easy-to-load film holders, this daylight tank requires just 16 oz of solution for processing. It has integrated liquid level indicators to prevent under or overfilling, and its unique design promotes fast filling and draining. The system also permits the use of a thermometer during processing for more accurate and consistent developing results. It is constructed from durable ABS plastic and sealed with an O-ring to prevent spillage when using inversion agitation methods.
- Developing Tank with 2 Film Holders
- Holds Up to Four 4 x 5" Sheets Per Load
- Requires Only 16 oz of Solution
- Liquid Level Indicators
Stearman Press 445100 Overview
Stearman Press 445100 Specs
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Stearman Press 445100 Reviews
Works but it takes practice
The product works OK. It's easy to understand, easy to load film, and easy to clean. Actually developing film is the tough part and it takes practice. You must squeeze the sides before sealing the caps to stop it from leaking. This creates a vacuum inside the tank and stops leaks. However, it's not so simple. My caps slowly leak air (but not liquids). So before each inversion cycle I have to remove a cap, squeeze out air, and then reseal the cap. It's a pain. If you don't recreate the vacuum regularly, it will leak like crazy. Worse, I had the whole top come off once during development. Thankfully I was already on to the stop bath and no real harm was done. The caps really should seal better. Also, the top should have some sort of latch to hold it in place. The friction from the o-ring is simply not enough.
Stearman press SP-445p
I believe SP-445 is the best & only solution if you want to process 4 X 5 film without a dark room for tray processing. This tank is designed solely for 4 X 5 film natively. I appreciate it only needs 480ml fluid to process as much as 4 sheets of film. It has amazing results & cut down the cost of developing & fixer fluid. Highly recommended.

