So, after years of ownership, I finally got around to to testing the differences between the configuration of both lens elements vs "rear only" on my 7.25" Verito.
I was a little surprised to see so much difference in contrast and diffusion loss with the rear only setup... at the same aperture. My lens is currently frozen at about f8 due to little use, dirt, and a failed cleaning (don't ask). It's no biggie, since that's what I want to shoot at, but with the rear element, now an 11 inch lens is much more contrasty, and the glow is greatly reduced. Should I assume that with f8 now rated f16, adjusts diffusion/contrast to match?
SO.... is it time to get the lens fixed.
P.S. this begs the question of wide open comparisons too
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