Quick test on field
(Sorry, y english is so so...)
I had the chance, yesterday to compare the BSII two hours with :
1. Swarovision 8x32
2. Svarowski Companion 8x30
3. Busnell Legend Ultra HD 8x36
and more than 2 hours with
4. Frontier ED 10X43 (that i own)
The first Frank's review is very precise and my feeling with these bino is quite the same.
Clarity and contrast +++.
Very brigth optic ! The contrast is really great Maybe a bit less brigth than the Companion (in back light it's more obvious). The Legend are not brighter (with its 36mm diameter...) . The Swarovision are a notch clearer. The Frontier ED are not clearer for me (but i own a x10 magnification and not a x8 !)
Colors +
No more CA than the Companion. As Frank said : very well controlled in the center. Few purple fringe outside the sweet spot. The Frontier ED seem better for CA and the Swarovision also.
Ergonomy +++
I like a lot the eyespieces. I can put them deep in the "orbital cavity". The Sightron and the two Swaro work well with my face ! I can't see through the Legend Ultra HD without the "kidney bean effect". I supose that the eye relief is too small and the eyepieces too larges for my eyes ?
FOV +
The sweet spot is nice, quite as large as the Companion (perhaps a little less 80% vs 85% ?). The Legend have a larger FOV but the field curvature begins quicly (approximately 60%). Consequently, the sweet spot seems smaller than the Sigtron and the Companion. The Frontier ED present also more field curvature but it's not the same magnification, soi can't conclude...
The Swarovision are perfect edge to edge with a larger FOV but i felt the special effect when i try some panoramics follow-up : rolling-ball effect ?
I don't know :brains:
Conclusion ?
It's a very nice little bin : optically very bright and very very pleasant to use. I other one Frontier ED seem to me an "elephant" to compare for an insignificant gain. I was very supprised but the focuser is "butter smooth" but the Companion i tested (news) presented a "hard notch" just before becoming to infinity. After this "hard point", the tension of the focuser was very very smooth (too for me).
To conclude, the optical difference between the Companion and the Sightron is not obvious. The Companion are more compact for approximately the same weight. The Companion shoud be more robust (and the Swaro's customers service is unbeatable, like the price : 1 Swarovision for 10 BSII : it's a gap :smoke