Svitantti
Well-known
Usually dilution does not determine contrast if you do not keep the dev. time constant. Usually contrast is controlled with development time does.
Different dilutions are used to reach certain graininess and edge sharpness or compensating development (stand, semi-stand, or just less agitation with longer times).
If your negatives are pale, develop longer (unless there really is some more serious problem with the developer). You can use selenium toner or such, to post-process the negatives. This gives them some more density and contrast. Using bleach and then selenium works even better.
Different dilutions are used to reach certain graininess and edge sharpness or compensating development (stand, semi-stand, or just less agitation with longer times).
If your negatives are pale, develop longer (unless there really is some more serious problem with the developer). You can use selenium toner or such, to post-process the negatives. This gives them some more density and contrast. Using bleach and then selenium works even better.