Been thinking about producing fine negatives and wondered if anyone knows what effect the concentration of the fixer has on image quality. Would for instance a more dillute fixer used for a longer time be less agressive and perhaps improve edge sharpness ? I use Hypam at the recomended 1+4 and make it up fresh for each film. at 20 c I give it 3 mins...ther fixer is then used up in the print baths. I know you will say just try it and I will But it would be silly not to ask the world if they have been there already.