AVS Forum Addicted Member
Join Date: Dec 2000
Location: Venice, Florida, USA
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What difference does any of this make. X is the master of cheap Y. Fine and Y is the master of cheap X but that doesn't make any sens. plastic glass? how about ED glass maybe 1 piece of ED glass is worth more performance wise than 2 glas elements and 6 plastic ones. How about determing how many elements in each including Y, the master of X, has in their lenses. And what does convergence have to do with lens quality? CA has to do with lens quality in coatings and sweet spot area. Give me performance measurements. what's the MTF of the lens/ Who's the master of MTF? take some focus nonuniformity against high MTF over most of the screen?. what exactly are you guys trying to determine?
I think if lenses have a problem, the manufacturer should be caslled out and potential customers warned.
JVC was exposed several years ago for having a lens where only 2 of the 3 primarily colors could be put in focus at the same time. Did they admit it? Of course not. Thay just hated me for exposing it but to their ever lasting credit, they fixed the problem by going to a cheaper lens. What a company?.. They went to a Chinese lens manufacturer who made them a better lens for less money they were paying to a japanese company. Its really a nice lens now. They didn't even say thank you to me for making them more money..Their biggest a hole employee still hates me and always will.
sony went to a cheaper lens in the 30 than they used to use in similar projectors.While one could see it really couldn't focus tightly, the PQ at normal viewing distances was fine. sounds like a good engineering design choice to me. but let's keep it quiet.
The 5o, I thought uses the same lens. parhaps it now has some glass in it. What kind of glass. Where. Better for markieting not to say. Just glass and plastic putting glass where it counts. Maybe I should write the marketing stuff But they put in RC stuff to make the lens appear to perform better. And that's all anyone should care about. hoes does the mother perform?
now there appear to problems this year with focus unitformity. problems not reported last year very much. So did they make the lens better or did they make it worse. maybe its better but with wider performance variances Answer. if you have one that's uniform, let the RC do its thing and enjoy. If you have good areas and bad areas, send it back because the RC can make the bad areas better
the lens should not drive your decision between the models being compared here. What you should be aware of when you chose because one does certain things better for you that you think are determinative, no enough (here with respect to how the lens should perform, to determine that yours is not defective.