The May/June “Photo Techniques” contains an article by Howard Bond in which he compares Pyro to D76. He shot several identical high-contrast scenes (snow on mountains) on 5x7 T-Max 100 and compared the resulting prints at 4.5x enlargement.
According to him, the prints are identical in terms of sharpness, and nearly the same in tonal range. He is convinced that a little extra work would make them identical. He ends that article by asking to see similar pairs of prints that show a substantial difference between pyro and any other developer.
He also raises some questions about the possible toxic effects of pyro.
Clearly, he sees no reason to use the stuff, and is asking for a careful, experienced printer to show him why Pyro is special.
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