![]() I expected to see longer exposure times as the PH140, an overdriven 75W incandescent, pumps out 1150 lumens compared to the Utilitech’s 60-watt equivalent 800 lumens. Part 2 saw me cobble together a vaguely alarming cardboard-and-hot-glue contraption to hold the bulb in the right place.įinally I made some comparison exposures to test for differences. In part 1 I considered ways to use a standard LED light bulb in place of the PH140 and ended up with the Utilitech Pro from Lowes. ![]() Off-the-shelf LED Enlarger Lightsource – part 3: contrast, exposure and coverage comparisons This entry was posted in Darkroom, Processing on by Paul Glover. Next trick will be to see if I can get away with just plain distilled water and no photo flo at all. So if you’re fighting this problem and are at a loss for how to fix it, this might just be the answer! Whaddya know but it worked! Half a dozen rolls finished up this way, sitting in distilled plus a drop of the wash aid for a few minutes, and not a single drying mark among the lot of them! No squeegee either, which reduces the chances of damage. I usually have that around anyway as I use it for mixing my stock solutions and diluted developer working solutions. But someone suggested distilled water for the final rinse, with just a drop of photo flo. But I’d still prefer not to have to deal with them. Sometimes I would be streak free and home clear, but more often than not, there they would be. ![]() I don’t, oddly enough, have trouble with drying marks on my prints. ![]()
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