This post is repeated here in chances that some may not see it in unmoderated Ph otonet.
While further checking out my newly setup Bessler 4x5 MCRX as concerning even illumination, (Dichro head), I've found as much as 9/10's of a stop difference between the center of the projection and the corner of a print, that would be about 8x8 as projected on a white peice of paper using a 6x6 neg carrier.
A previous response to another question educated me as concerning light falloff at distances, and that falloff was normal. (1/2 stop was alluded to on a 8x10.)
My thought as a possible way to even this out would be to create a density mask and use in it the filter drawer which is just above the lens, or in the color filter drawer just beneath my Dichro head. I would expose a peice of film at the size of the filter needed.
My question is 1. Is this is possible? and 2. If not, what can be done? 3. If possible how do I figure exposure to get the proper density in the filter negative and how do I do it on my enlarger.
Basically I don't see why this uneven illumination needs to put the chore of burning and dodging on me, out side of any manipulation that I would want to do.
I would like to find out how others may have dealt with this, and what enlargers others have found to have more even illumination.
With the extra manipulation currently involved, I may as well scan the negs and use Photoshop. Sure seems a better, faster, and sure way to get the results I want without spending hours in the darkroom. I appreciate your insights.