I've been using a 90mm Super Angulon for awhile and have started learning about the need for a center filter. Of course a center filter is quite an expensive it em when you have only so much income and a need for other things such as film, c hemicals, paper etc. So taking this under consideration I started wondering if t here was not a more economical way to achieve almost the same result but at a le sser cost. Here are a few questions that I have that all seem inter-related yet have not been answered completely in the archives.
<ol> <li> Center filter on enlarger lens: Would it not be possible to achieve the same effect or result at the printing stage by placing a center filter on th e enlarger lens? If so, might it be cheaper to make a center filter in the 40mm size rather than the 67mm size? <li> Diffuser made for light stage:Would it be possible to make a diffuse r out of acetate or something similar that could be placed in the filter drawer of an enlarger to achieve increased even light distribution across the whole neg ative? <li> Center Filter Negative:Like an "unsharp mask" would it not be possib le to produce a 4x5 negative that is "center weighted" to be used in a sandwich to even out the illumination from the center to the edge? There was a thread tha t mentioned using something like "PhotoShop" to try to achieve this result. <li> Larger Enlarger lens: I read in a previous thread that a 135mm enlar ger lens will barely cover a 4x5 negative. Does this mean that there is addition al light falloff on the edges of the 135mm lens? If so, then would somebody usin g say a 200mm or large lens gain by having less light falloff using the increase d focal length for printing? <li> Is the light falloff accumulative? :In previous threads there were f requent mention that an enlarger lens can suffer up to 1 full stop of light fall off at the edge. Now taking into account for the possible "one step" falloff fro m a super wide lens, do you now have possibly as much as a two stop light proble m to deal with during printing? </ol> Hopefully I did not ask too much all at the same time but if I did then I apolog ize to the group. I thought this would all be better addressed as one thread. Thanks in advance for considering my question.