( I have posted this message before on APUG, which actually felt like betraying the pure-silver list...;-).., I actually like our mailing list format better, so it served me right that I got little feed-back on this..;-)..), anyway..... Hi, I have been using a Durst L1200 Laborator with a condensor for about 15 years now (35 mm upto 4*5 inch). I have always been quite happy with this enlarger. In the past I have checked the illumination and noticed it was a bit off. Recently I looked in more detail: I used the correct condensors and lens (80mm), focused a 6*6 negative , removed the negative, and used a RH Zonemaster II in the density mode to check the illumination on the base board. I now noticed that the corners and the side were quite off. The L1200 has on the side 2 knobs for the lamp postion, and the lamp housing can be moved in and out as wll. The best I could do is roughly the following: 0.15 0.08 0.16 0.08 0.00 0.07 0.17 0.06 0.12 (so the middle put on zero, the other figures representing the very corners and sides). Initially I mistrust the Zonmaster, I mean 0.1 means 1/3 stop and 0.15 1/2 a stop. I find this alot, OTOH I never realy noticed this when printing (probably tells that I am not that a good printer I guess.. So I checked by exposing a grade 5 piece of paper to about middle grey, and sure enough it showed the same effect, (although I am not sure if I realy see that half a stop difference) the corners beeing somewhat lighter. Somehow I find this dissapointing for such a sturdy enlarge of great reputation, you might say why worry if you're happy with prints, but it is nagging.. So I tried to diffuse the light between the bulb (a guinine Phillips Photocresenta, 75 watt) and the condensor with some milky plastic, paper, and even a piece of groundglass. It did not help, and even made matters worse. Another solution would be a diffusion head, a CLS501. I happen to own such a head, but I was not too happy with it for various reasons. So any suggestions on improving matters will be greatly appreciated! Best, Cor ============================================================================================================To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.