High Dilution Development

I found a post on the APUG website suggesting that Rodinal developer could be diluted far beyond its design limitation to produce images with interesting tonal and textural qualities. I use Rodinal 1:25 for fine grain film, like Plus-X and Maco 100 Plus, to produce monochrome prints with high acutance and just a touch of grain, but after reading about diluting it to 1 part concentrate and 100 parts water, I just had to try it.

To create the solution with as little variability as possible, I mixed 10ml of Rodinal concentrate with 500 ml water to create a 1:50 solution. After removing 250 ml of that solution, I replaced it with 250 ml of water for the final 1:100 solution. I let the film sit in the ‘soup’ for half an hour, agitated the tank slowly three times in a ten-second interval, and then let it sit for another half hour. To stop development, I emptied the tank and then filled it with water and let it rest for another 5 minutes. This lets whatever developer is left to work on the shadow areas whereas stop bath would have stopped development in its tracks. I fixed and washed the negatives in the usual way.

Many of the images were lost to poor composition, but the ones I kept were rather extraordinary. I photographed an old diesel engine that I found sitting on a lot and rusting into oblivion. The combination of grain and high contrast gives the images a gritty, industrial feel and exaggerates the lines in the machine, especially on the exposed valve springs. I just ‘feels’ ancient.

I also found some arborists removing a dying tree and photographed them. The camera was a Pentax Spotmatic F. The lens that I used to photograph the engine was a Takumar 50mm f/1.8 and, for the arborists, a Takumar 135mm f/3.5.

I wouldn’t recommend high dilution development for that once in a lifetime shot, but I was rather pleased with the texture and tonality that I got from the experiment. You will find ‘Where’s Waldo’ and ‘Arborist’ in the ‘Portrait’ gallery and ‘Industrial Mortality’ and ‘Potential Energy’ in the ‘Ancient Industry’ gallery.

Great fun on a Saturday afternoon!

Monochrome detail of abandoned engine