solentbirder said:
Anyone actually used any of the Optolyth Royal range of roof prism binoculars ?
Hi,
I owned a secondhand pair late last year, as I also was looking for the optimum (for me) poor light bino. I also own 8x32 HGs and 8.5x42 ELs, against which they were compared.
Perhaps not a fair comparison, but from the beginning it was fairly obvious they were not on a par, both optically and mechanically (especially the frail, external, focusing mechanism), with the other two. Although properly collimated, I never felt comfortable with them at the eyes. They are big and heavy and the fov at 110m/6.3°/50° AFoV appeared 'tunnel-like'. Star images were sharp(ish) in the central 50% but fell away sharply after that.
After extensive comparisons which involved many early morning starts to the day, I was surprised to find that the Swaro, with a 5mm exit pupil, outperformed the Optolyths in almost every way, notably sharpness and contrast. Yes, the Optolyths were brighter, but after wandering through my local woods in semi-darkness, I came to the conclusion I could still see more detail with the ELs. And that went for the HGs also with their 4mm exit pupil.
If your heart is really set on 8x56, with the Optolyths at £499, I personally would look around for a good pair of s/h Swaro 8x56/8x50 SLCs which will give you a much better view. But as ever, the last word is try, try, try, until you find what suits YOU best.
Well, that's my two-pennuth.
Good Luck.
Chris.