Quote:
Originally Posted by
hz1 
Is this your 1st projector Circlecycle? I find it hard to believe that your unit doesn't require warm-up time, doesn't have any light leakage and focus or convergence issue to any degree. This is my second LED projector and 4th projector in the last eight years. the lg-hs201 did not have any of these issues. Why don't you make a vid and demostrate how perfect your unit is.
as my previous posts in this thread covered, it took
three projectors to get one good one. Let me state that once I got a "good" one, i fell in love with this projector, but angry that QA issues are so rampant. I use this QUMI 8 hours a day to make my living, programming, so i am
very sensitive to it's text-mode operation! I still have light leakage, and i still have warm up focus drift - but those are acceptable (to me). What I
don't have is the uniformity-of-focus issue. that would otherwise prevent all text from being in focus at the same time. Not any error on my part, believe me, I now know what "chromatic aberration" is!**
you don't need a video demonstration, just the facts: the unit i have has a warm-up focus drift (ALL units seem to), an issue with light leakage around the projected image (ALL units seem to), and NO issue with convergence or uniform focus. Two that I had first had convergence issues (deal killer! I want to see code!).
Because I use the qumi to write code, trust that my previous posts are accurate and detailed. If I couldn't have got sharp focus i would have never kept the unit!
My daily usage (semi-dark room, shaded window w/no overhead lighting, projector in "eco" mode @ 60 inches) doesn't reveal visible light leakage, and I live with the focus warm up drift. Since I have a "good" unit in terms of focus i am VERY happy with my purchase. Ridiculously so -- i am only worried that the horrible variance we see in quality will bite others, and that's why i post here so much.
Bottom line: I dearly hope vivitek acknowledges the problem and ships better units so I can recommend it, which I still do... But the reality is that they may fix it, but never acknowledge it, so let the buyer beware. So long as you buy from a store you can easily return it to to obtain one good one it should be okay. I shopped at a local store and made two returns, in quick succession, to get the one I kept (their last one in stock, thankfully, as they had only three... whew!)
---
**: (Okay i
do have chromatic aberration but it is so minor i kept this unit. I just got lucky that the 'misaligned' component is
better aligned here then on the others. That's why i believe it's an engineering issue: they forgot to tell somebody about the needed tolerance. It's doesn't seem that most are right and only a few are off (as evidenced by my own experience AND the experiences of the people here) but that the amount of aberration which i take to be the positioning of some component is
freely variable amongst all units produced! Was it considered when building the projectors in the factory? Was the issue a terrible omission from spec? Following this logic, I further deduce that vivitek received a bulk shipment of units like this and they
know they are misaligned but the financial penalty and bad press -- they already delayed shipment once (gee, i wonder why?) -- meant that they'd just ship 'em and see how many
never noticed, since many-to-most would only use it for movies anyway, where that sharpness is far less noticeable then editing text. If i take my theory to be true, and it's hard to imagine they don't realize these a significant portion of these units can't focus text properly, then my little rants here make more sense. I am frustrated that it appears vivitek knowingly shipped bad units on a projector I would otherwise say is perfect, and that I bought the very moment I saw the specifications on.
. I need the solution too.
