Platinum print contrast test
Platinum print Contrast test. This note was written based on this PDF file, which is generated by AI. It is told that the ratio of chlorate decides the contract of Platinum print.…
Notes
Notes from the darkroom and the workbench — densitometry, digital negatives, and the alternative printing processes the Midtone Lab apps are built for.
What these notes are for
The working notes behind StepWedgeDensitone and AltProcessDensitone — measurement, digital negatives, and alt-process printing.
Platinotype mixing day
Mixing Day: Preparing Platinum Sensitizer Solutions 4/12/2026 Yutaka Suzue I have been planning to mix my stock solutions for platinum printing. Today I finally had a chance to…
Uv light box
Building a 365 nm UV Light Box with ESP32 Timer Control Introduction Alternative Process becomes relatively handy once you have an UV light source, offering greater consistency…
Auto shutter release timer
I often use very small apertures—f/32, f/45, or even smaller—when I shoot with my 4×5 camera. With ASA 100 film, this easily leads to long exposures using a bulb shutter: four…
Kallitype developers measurement
Kallitype Developers Comparison 5/13/2023 Yutaka Suzue Introduction There are many numerous developer recipes for Kallitype. And even some basic developers can result the variety…