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Stearman Press SP455 4x5 Developing Tank System

Stearman Press SP455 4x5 Developing Tank System - Main image
$72.36 $108 In stock

Category: Darkroom Accessories

Stearman Press SP455 4x5 Developing Tank System

An Affordable Way to Start 4x5 Film Processing

Stearman Press have created an elegant yet affordable solution for processing your own 4x5 film. After several prototypes and plenty of experimentation, the SP-445 processing system emerged as the easiest method for processing 4x5 sheet film, using the least amount of chemicals. It can process up to four sheets of 4x5 film with just 16 ounces of solution.

Loading the SP-445 film tank is simple; slide the 4x5 film onto the holders in darkness, line up the holders, and insert them into the tank. You’re then ready to develop your film in daylight.

Key Features:

  • Processes up to four sheets of 4x5 film at once
  • Uses 16 oz. (475ml) of solution
  • Easy to load, similar to a film holder
  • Daylight safe
  • Quick filling and draining
  • Inversion agitation for even development
  • Built-in liquid level indicators
  • Simple to use with a thermometer during processing
  • Durable ABS plastic construction
  • Industry-standard O-ring seal

MPN: SP455

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Customer Reviews (4.8 / 5 · 5 reviews)

Kevin ★★★★★

Setting up the tank took less than two minutes, and the self-loading reels held my four sheets perfectly without any frustrating binding. The light-tight pour spouts made filling and dumping chemistry quick and drip-free even in the dark.

Joseph L. ★★★★★

I was a little intimidated by 4x5 processing, but this tank makes it surprisingly straightforward—the built-in fill/drain ports let me swap chemicals in about 15 seconds with no spills. The lightweight plastic construction feels durable enough for years of regular use.

Grace ★★★★★

The pour spout design is genius — it lets me invert the tank without spills during development, and the whole thing drains in seconds. Loading film was easier than I expected with the included reels, even for my shaky hands. Definitely a solid upgrade from tray processing.