Originally Posted by archiguy
My throw will be about 17.5' onto a flat 2.35:1 EN4K woven AT screen. I figure there's no need for a curved screen at that throw length, and pincushion shouldn't be an issue. Projector is the JVC DLA -RS4810 (aka DLA-X55R). I ruled out the new Panamorph CineVista lens in spite of its attractive cost because of the chromatic aberration caused by the non-cylindrical lens. But I still don't want to spend more than about $2500 on a lens. I want an electric lift or sled so I can optimize my projector's capabilities and get the best of all worlds regarding 'scope and HD material (lens on for 'scope films, lens off for 16x9 TV & movies).
I've been looking at the Prismasonic C-150 but can't find any reviews on it, here on AVS or anywhere else. It's a cylindrical lens made by a Finnish company that meets my price point. Does anyone have this lens or seen it in action? And I basically know nothing about the others in the marketplace. Again, I can't seem to find any information that speaks to the relative quality and features of various lenses. It's like there's this black hole when it comes to this one particular aspect of the HT world.
I cannot comment on the Prismasonic C-150 since I have never seen one in action. I'm sure it is an excellent lens based upon Prismasonic's reputation.
However, I did want to correct a couple of major misconceptions regarding the CineVista. The CineVista - and ALL Panamorph lenses - are prismatic / cylindrical hybrids, based upon Panamorph's unique patented design. Also, the lack of chromatic correction in the CineVista has nothing to do with it being a "non-cylindrical lens," it has to do with the corrector element being left out in order to hit the price point. For example, the Panamorph UH480 and DC1 have
chromatic correction, yet still share the same basic design as the CineVista. It's a design / cost choice that has nothing to do with the whole "cylindrical vs. prismatic" debate.
Finally, I would like to address that "cylindrical vs. prismatic" debate and give Panamorph's perspective:
- All Panamorph lenses are prismatic / cylindrical hybrids, the CineVista and FVX200 included
- The lack of chromatic correction in the CineVista and FVX200 has everything to do with being designed to hit a price point, and nothing to do with any deficiency in the underlying technology
- All Panamorph lenses are made from "ground glass." In fact, all glass used in the manufacture of optical lenses is "ground glass."
- Panamorph will happily allow its UH480 and DC1 lens systems be shot out with any "pure cylindrical" lens on the market. Our own testing has shown the best of theirs is no better or worse than the best of ours. All are excellent designs.
FYI, the RS4810 has the ability to dial out the chromatic aberration inherent to the CineVista.