Antares 45 Degree 2" Prism Diagonal (2EID45)

This has a very nice erect image view with zero artifacts but i do not recommend it for my new F/6.45 Evolux as its Focal ratio is just alittle too fast for a prism, it works but degrades the image significantly. Although with my F/9 it truly stuns, and it honestly, would have been better with a non-maring compression ring setup. Very Good value but requires IMO at least F/8 optics or better to really perform best. Got slow optics- its a killer !!