This is the experiment.... I have a swaro 80 HD scope...20-60 zoom eyepiece and a Fuji F30.
Rather than going to full 3x on the Fuji that appears to be a conclusion of all (full camera zoom), why not back off and go half way with camera zoom but increase the scope zoom from 30 to 40, thus off-setting the less camera zoom. See what I mean?
So under normal conditions when I would take my Fuji out and zoom to camera 3x with scope zoom at 30 or less, I would be at F5. I want lower at times.
So by setting camera zoom at half or around 1.8 or so instead of 3x, and increasing scope zoom to 40, my F is now F3.2. Much better and no vignetting.
If I go to 1x or no zoom on camera, I get increase vignetting. If I increase eyepiece zoom beyond 40, that always is increased vignetting. So I am trying to find the optimum camera zoom setting plus scope zoom to give me the best overall sharpness, in the F3.2 or 3.4 range and high shutter speed. I might have to increase ISO to 800 instead of 400 depending on amount of sun/shade.
Anyhow....fun to experiment...
Rather than going to full 3x on the Fuji that appears to be a conclusion of all (full camera zoom), why not back off and go half way with camera zoom but increase the scope zoom from 30 to 40, thus off-setting the less camera zoom. See what I mean?
So under normal conditions when I would take my Fuji out and zoom to camera 3x with scope zoom at 30 or less, I would be at F5. I want lower at times.
So by setting camera zoom at half or around 1.8 or so instead of 3x, and increasing scope zoom to 40, my F is now F3.2. Much better and no vignetting.
If I go to 1x or no zoom on camera, I get increase vignetting. If I increase eyepiece zoom beyond 40, that always is increased vignetting. So I am trying to find the optimum camera zoom setting plus scope zoom to give me the best overall sharpness, in the F3.2 or 3.4 range and high shutter speed. I might have to increase ISO to 800 instead of 400 depending on amount of sun/shade.
Anyhow....fun to experiment...