Zone Imaging DeFehr’s 510 Pyro B&W Film Developer 100ml

510 Pyro, formulated by Jay DeFehr, is an extremely fine grained, high acutance, long shelf-life staining developer giving full film speed with most films and uniquely triple optimised for darkroom silver gelatine printing, alternative UV based printing and scanning with the same development time.

It proceeded to win the Silvergrain Classics 2021 Awards.

510 Pyro is specifically designed for both modern T-grain and the conventional emulsions.

510 Pyro is for maximising sharpness with minimal grain – solving the traditional paradox of a trade-off with sharpness and grain levels; extended range of tonality -particularly unrivalled highlight separation in silver gelatine printing given by the inbuilt variable contrast filter or extraordinary shadow recovery in digitisation – obtained from the stain; high micro-contrast and exceptional enlargements exceeding x20.

510 Pyro is supplied as a liquid concentrate diluted for 1:100 one-shot use. However, it can be further diluted for economy though there will be a reduction in image quality and longer development times.