Originally Posted by DB2
Lens shift on single chip DLP projectors is very difficult and very expensive. That being said, I think the amount of offset on the HD81(LB) is way too high. When Optoma orginally designed the HD81 they used the chasis from one of their existing models in order to keep cost down AND to speed up production time. They accomplished their goals for the HD81 but they should have redesigned a chasis that uses less offset for this model IMHO.
I agree - for those of you questioning the amount of offset in the original HD81, it was explained in the HD81 thread by TzungILin (which DB2 summarized above). But, Optoma has had more than enough time to re-engineer things to reduce or eliminate the offset. Luckily I have 11' ceilings so it would take a PJ with one hell of an offset to be an issue in my place.
Until we see some concrete specs on the bulb, optics, and color wheel, as well as some impressions from those who have seen it in person (hopefully that'll be me tomorrow or the day after), I'm not sure why everyone is discounting the higher lumen output as compared to the HD81. At this point it is all blind speculation, and thus completely baseless and pointless.