Camera adapter for Pentax PF80 EDa (1 Viewer)

I have a Canon a80, the mechanics of which are the same as the a95. I was wondering if other members using similar equipment have had better luck than I with reducing vignetting. Using the supplied zoom eyepiece and my current adapter (Scopetronix Uni-T) vignetting is signifcant at any point below full zoom. The subquent results often offer far more magification than desired. I want a picture of the whole bird, not just its head!

I am not familiar with that camera but I read here you can try moving the camera lens either farther or closer from the eyepiece to the specified eye relief distance (ie 20mm).

Remove the scope adapter, put your zoom eyepiece in lowest zoom setting, and try to find the correct distance between camera and eyepiece by moving the camera forwards and backwards. If the a80 is realy the same, you can get better reults with it.

(edit)

I saw that they arent the same. The a80 starts with 38mm and the 95 starts with 35mm. In theory the a80 should work better. (for so far you could notice) But, i don't know how the zoom ranges further compare.

Pardon my Englisch, I'm Dutch.