After being Covid-19 quarantined for about 6 weeks I had finally had enough of home projects and sitting around bored.  I convinced my wife that we should go on a Sunday Morning Adventure and take a short hike to some waterfalls a friend had told me about.  The drive there was a short 40 minutes, […]

I have written several blog posts about the various cachetol based film developers I have been using the last few years. So I thought I would post my observations and personal experiences in more of a summary format for anyone who wants to explore a similar path. The only caveat is that these statements are […]

In my previous article, Obsidian Aqua first mix, I described how I mixed 200ml Part A at 1/2 strength and created what I now will refer to as OA/2-A. For my film test I needed a part B and I still have plenty of part B from Pyrocat HD mixes which are 750g/liter of Potassium […]

I had stumbled upon Jay DeFehr’s website a couple of years ago when searching for an alternative to Pyrocat HD which kept failing for me.  Obsidian Aqua is a simple two chemical (part A) that is highly concentrated and easy to mix. Like most of the cachetol based developers the goal of this developer is […]