Film recipe: Kodak Pro Prn 100 + D76


Recipe: Kodak Pro Prn 100 + D76
Developer: Kodak D76
  • Dilution: Stock
  • Time: 10:00
  • Temperature: 20C, 68F
  • Agitations: 60 seconds, then two rotations every minute
  • Kodak Stop Bath
  • Time: 1:00
  • Ilford Rapid Fixer
  • Time: 3:00
  • This film expired in 1996, so I pushed it 2 stops (shot at EI400). Since it's a C41 film and I was developing in black and white, I used the dev times for TMax 100.


I bought my Bronica ETRSi off of Craigslist about a year ago from a woman who lived an hour away. After a few days of texting back and forth we finally agreed on a time and place to meet. When we met there was something off about the seller. I couldn’t place my finger on it but she didn’t seem to know much about the camera and just wanted to get to her money and leave. I paid $50 for the camera, a 120 back, a 75mm lens, a 150mm lens, a Polaroid back, and a bag. She also threw in a Minolta SRT-201 –that didn’t work– with a 28mm lens just to sweeten the deal.

I ended up buying it but the way she acted never sat right with me. I became more and more convinced that she had stolen the camera, which explained why she had sold it so cheaply. After about a week my conscience got the best of me and I contacted her, thanking her for the deal, and asked a question about the Polaroid back. She responded that she didn’t actually know much about the camera, that it has been her ex-husbands and she was just getting rid of it before she moved to a different state.

I felt better about everything; the camera wasn’t stolen, it was just a momento of a broken marriage. He hadn’t taken the camera with him, and she hadn’t touched it in over twenty years. My conscience was clear and now I had a decent medium format camera that had been neglected since I was in high school.

At the playground

When I got home from buying it, I took everything out of the bag and did a quick cleaning. There were some additional items that she hadn’t mentioned: some UV filters, a nice speed grip for the Bronica, and a couple of old rolls of film. At the time I was only shooting 35mm so it was nice to be able to get into 120mm right away.

Both rolls were Kodak Pro Prn that had expired in lat 90s. I loaded the first roll in tried to learn how to shoot with my new camera. Within a few days I had taken 12 shots so I loaded in the second roll, this time a bit more confident. I had the second roll developed and scanned professionally at The Find Lab; the results were better than I had expected. (You can see my favorite two shots here.) The other roll, the one you’re looking at, sat in my bag for another six months.


With my first cross-processing experiment somewhat of a success, I decided to finally develop this roll, the first I had ever shot on a medium format camera. I didn’t know where to start, so I went to the Massive Dev Chart and looked for ISO 100 Kodak film, and saw TMax 100. From there I just used the times for developing TMax at 400 and added another 30 seconds. I probably should have added another minute, a lot of the blacks are completely crushed, but hindsight is always 20/20.

The results aren’t great; they’re not even that good. I think there’s maybe one photo on the whole roll that I actually like. But it was an experiment, it was my first roll shot on a new camera, and only the third roll I’ve developed. I’m still learning.