This will not completely solve your problem, but you might want to use a fine-grain developer that reduces the film speed by at least one f-stop (such as Ilford's Perceptol). In addition, you might abuse an identical film on purpose by repeating your mistake. Then try reduced development. See if the side effect, a compressed tonal scale, is acceptable. Also try normal development (and reduced development, if normal is just too much) on a negative with comparable overexposure, and see if Farmer's reducer could be a help.(posted 8854 days ago)