The weather here in the Pacific Northwest has been incredibly hot the last week or so. Heat waves are not my favorite thing, in part because it can make working with analogue photography quite difficult. Not only is it unbearable to go outside to make actual photographs, but it can also make the back end darkroom process a bit of a pain to work with. In my case, the difficulty can be the reticulation effect with film.
Photographed with a Hasselblad 500c/m and Ilford HP5 120 film. Film was developed in cold water and rinsed later in hot water to get the reticulation effect.
What is film reticulation you might ask? In the world of emulsions and film, reticulation is simply the science of distorting the emulsion layer to create an overall pattern in the film. The single most important ingredient to produce reticulation is extreme changes in temperatures of developing solutions. In other words, because film emulsion is based with silver, hot and cold temperatures will make the emulsion expand and contract creating a textured effect.
When the weather is incredibly hot, the water will come out of my tap in spurts ranging from hot to cold at random. Normally I develop my film at an even 68 degrees. But during heat waves, the water will vary from about 60 degrees to 85 degrees at will.
Now, if I wanted to I could use ice cubes and steady water baths to keep my temperature consistent. In most cases that is what I do. However, sometimes I will just embrace what mother nature put in front of me and run with it, crossing my fingers that the effect will work out in my favor. I think that was the case here as the foggy misty morning where this photograph was taken compliments the reticulation effect quite well.
So hey it worked out!
As always with film however, you just never know and letting the reticulation effect take control in the development process can be risky.