Brian - you're assuming that everyone else's enlarger is the same as yours, whereas enlarger light
sources vary dramatically in terms of light output, just as different papers have different effective
speeds, which is complicated in the case of VC papers. Color enlarging can present distinct recip
challenges, depending on what you are specifically doing. Current RA4 papers are generally cooperative because they tend to print quickly on most colorheads. Although current Crystal Archive
options are used in laser systems, they balance just fine in ordinary optical printing - they're deliberately engineered dual-usage.