- Details
- Written by: Henrik Petersson
- Category: The Print
This article is about the construction of a 'Do It Youself' (DIY) f-stop darkroom timer.
Introduction
Some time ago I decided to find a replacement for my old mechanical darkroom timer. I was immidiately suprized by the cost of buying a new one, so I decided to build my own instead. Of course, one seldoms earn any great money on such decision, but it is a creative process and one ends up with a device tailored for ones needs.
Some criterions that were important for me while sketching on the design were:
- a nice price for value
- feature rich
- easily upgradeable
- easy to operate
- compact in size
At the time of writing this article, my timer has the following features:
- f-stop timer mode
- test strip mode
- burn mode
- manual exposure mode
- foot-pedal switch
- metronome
The main unit can be seen in Figure 1 below:
Figure 1: The f-stop timer main unit
- Hits: 102
- Details
- Written by: Henrik Petersson
- Category: The Print
The 'SP-445' is a compact 4x5 sheet film processing system from 'Stearman Press LLC'.
https://shop.stearmanpress.com/products/sp-445-compact-4x5-film-processing-system
The tank can develop 4 sheets at a time and after development and fixation, the films can be washed inside the SP-445 tank.
To accompanion this tank development system, I decided to make a DIY force film washer. The washer allow me to conveniently transfer the SP-445 sheet film holders directly from the dev tank and into the film washer. Assuming you have spare film holders, the dev tank can then be given a quick rinse in order to be ready for developing a next batch of films (while the first batch is still in the film washing tank).
- Hits: 120