Quote Originally Posted by ath View Post
Yes, but it doesn't seem to matter that much with this specific enlarger.
Might be the big illuminated area of the frosted bulb in contrary to a point source.
You are right, that indeed could be the case. Most "condenser" enlargers are somewhere between a perfectly collimated point source and a diffusion source. So, on the LPL the focus of the condensers may not be super critical.

I guess most important is to check various combinations of the condensers and see which combination actually is the most even under your conditions.

I high contrast print with no negative can be very revealing