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Comments about Omega DD Liner Kit for D5-XL and Prolab II Enlargers:
I've had my Super Chromega D Dichroic II for 10+ years and never gave much thought to the light mixer. I only do B&W variable contrast printing, so the yellowing of the liner never really caused me a lot of grief.
This liner is a one for one replacement of the foam and output diffusion screen. It also includes the input diffuser and instructions. It fit well, but it was a little ragged around the edges. The input diffuser was stained with something so I used the old one, which appeared to be in good shape. I recommend blowing out stray foam particles with compressed air before you put the top foam piece on.
In case you're wondering why not just make your own, it should be noted that the output diffusion screen is a shaped piece (thicker in the center) and not merely a piece of flat translucent plastic.
The new output diffusion screen is shiny on the bottom side and dull on the top which is just the opposite of the old one that I was replacing. To me, that is problematic because the rectangular cut-out in the negative carrier reflects off the glossy diffuser resulting in uneven lighting (a noticeable dark strip around the edges of the print when using very high contrast filtration). This can be remedied by covering the bottom of the diffuser with a piece of matt diffusion material or make the top of your negative carrier black (which will reduce the enlarger light output slightly). I opted for the latter because I sometimes use Variable Contrast filters below the light mixer which can result in the same issue because they too are glossy. I also like the reduced light because I often have to use ND filtration to get long enough exposures with higher speed papers.
There is no doubt that the color temp of the light output went up after installing the new liner, but unfortunately I didn't think to measure it beforehand. I wouldn't be surprised if I was able to reduce my use of magenta filtration, though.
That's probably way more than you wanted to know. haha! Anyway, I must add that I appreciate that new parts for these old enlargers are still available (and that B&H sells them).
- Was this a gift?: