I bought the Alpen 706 spotting scope adapter hoping it could work well for my Pentax 80-ED spotting scope with its straight eye piece. The adapter has a good design and when it arrived my first impression was that it is well made. But after tinkering with it several times, I had to conclude that my scope was just too big and heavy for this unit. It attached, but it was a very shaky affair. I also found that the camera mount vertical arm did not quite reach full perpendicular to the horizontal scope mounting arm. This meant that the camera was never quite inline horizontally with the scope. I feel I could have modified the vertical arm joint slightly to achieve full perpendicular, but with my scope also being too heavy for this unit, I elected to send the whole thing back. Optics Planet was very accommodating with the return and I would have no problem purchasing from them again.
Pros: Nice design
Cons: My scope was just too heavy
This review was written in the old system and had content requirements that are different than reviews written today.