[sehrgut]

Why don't you test it with some valuable pix? Just kidding. It is true though that I don't know at all and some rather sophisticated experiments would be in order.

I may try it clips from a roll of test charts. I'd be interested to know if cheaper chemistry could produce similar results with only inconvenience to pay.

My only problem with experiments like this is I don't have a densitometer, and scanning things without SOME automatic compensation is difficult with any software. Makes it difficult to detect subtle differences like half-stop speed losses and such.