Originally Posted by purduesd
Can you give me the short answer about what height ideally i would need to mount the NX5 or 6050. Top of my screen will be roughly 87.5" Like in a perfect scenario the lens is at the top of the screen.... etc.
Does lens shift have any drawbacks like keystone correction does?
I see your point about bulb life. 1000 hours on a bulb equates to a new bulb / year at ~20 hours/week. I don't see myself down there that often but i wouldn't be shocked if its an awesome viewing experience either. Just thinking out loud here.... id replace a $300 bulb every year to not need another projector.... But this doesn't consider usuability/ startup and brightness.
A cheap 1080p DLP mounted close to the screen would be brighter than both the JVC and Epson. Laser more so. Laser starts immediately.
Lens shift on the NX5 or the 5050/6050UB should not be an issue, although it's technically not recommended to be used at 100%. One user with a 5xxxUB series claims there is no distortion with 100% vertical lens shift. The 6050UB and NX5 should have better lens quality.
Height of an 120" screen in 16:9 format is 58.8". Half of that is 29.4".
If the screen ends at 87.5", then the middle of the screen would be at 58.1" height.
80% on the NX5 would be 47.04" and 96% on the Epson is 56.44".
So the JVC's center of lens can be up to 105.14" and 114.54" for the Epson.
Not going to bother with the Epson, since it's well withing range, but for the JVC, if the projector would be attached to the ceiling (105") with the shallowest mount (3 inches ?). Height of the NX5 is 9.5", lens is around the center = 4.75"
Center of lens would be ~8" from the ceiling, so 97" high.
With the center of the lens at 97" and center of the screen at 58.1" (38.9" difference), or around 83% of what the vertical lens shift can do.
If you're asking at which height the projector should be mounted at, it depends on the mount's height. But even with the NX5 flush against the ceiling, it would still not reach 100% of it's vertical lens shift.
It should be fine with 83% of the vertical lens shift, but I'd also like others comments on this topic.
A solid mount is required for the NX5 since it's 43lbs. The Epson is 25lbs.