Leonard He Leonard, I guess with ‘ important’ you mean, that the Aivascope 1.75X has more edge over compression than the 1.5X?
I think they are similar, I will soon put up a side by side test. However its important to note that since ‘ going wide’ is an important feature for many anamoprhic shooters and hard sought after we published quite some test showing how wide you can go with this scope, and thus bottlenecking the scope quite a bit.
About Leica r, most suffer quite a bit from CA, however there is of vourse thwe apo summicron etc, but please not that if you want low CA you might want to look into a other direction.
But keep in mind that most lenses dont pair well with anamorphic when opened up further than 2.8, basically diminishing results will kick in, also if you shoot beyond 50mm focal lengths , the mtf of the diopter is not optimized for longer focal lengths and a f4 or f5.6 is required.
Also a lot of lenses are vignetting mechanically due to a mismatch between the aivascope rear element and the spherical block front element, when opening up a lens it gathers light from the outer edges of the front glass and if this is obscuredby the aivascope this will lead to a deeper stop, so no matter how far you open up your aperture it will not really perform much different. So if you want low CA performance I recommend looking into apo lenses or shoot at a 5.6 or something and you will be fine.
About the difference in price between an iscorama 54 and an aivascope.. I bet eh iscorama is worth more, but I am not a 2nd hand lens trader
