Hi, Just wanted to see if anyone has encountered situations where they had to exposed their negs using an enlarger for an insane amount of time because the negs were thick. Let me start off first, I've only been doing this for a while but last night I was doing a printing job for a client and had been doing test strips. But for the life of me, I couldn't get the blacks or whites, just very faded grey. I keep increasing the time and even bumped the filter to 5 and still, it was dull grey. I had reached 150 seconds when I decided "screw this, I'm pushing it to 200 seconds". Finally the blacks and white showed up correctly and so decided to do a full print, to my horror when the image showed up, while one side was properly exposure but the right side wasn't, I looked at the negs again careful and noted that there was definitely a tree there (the photos was a picture of 2 trees, the left tree was now properly exposed but the right one was under!). Realizing that the only way I was going to get a properly a exposed print, I did a test on the right side. Even 200 seconds wasn't enough, it took up to at least 400 and the aperture on the lens was as wide as it could go! So now printing it was going to be a 2 fold operation, first I had to exposed the whole print for 200 seconds, then burn the right side (the second tree) for an additional 200 seconds! So here I was, in the darkroom, with 2 cardboards dodging and burning the photo just to get it properly for over 400 seconds. While it wasn't something to talk about but I felt pretty happy at my first attempt and hopefully the client will be happy. I've heard of people who had to sometimes exposed for 30 minutes before, has anyone does such a thing before? Or is there some other way I could have avoid the problem of doing such long exposure?