Originally Posted by Kristian Monsen
I actually did most of them:
- I guess for the watching area is like ~20'x16'x8'
- Two windows just behind, they will obviously be blacked out. Some to the left as well.
- Can't remember how many hours, just that I found it annoying and that it was hard to know if I had to change or it just felt dark that day.
- I was very happy with the projector when it was not too dark because the lamp had to be replaced. Including the motion handling.
So what do you think? Are those projectors good and the reviews mostly focusing on minor flaws or am I better off just keeping the TV? Is a $3000+ screen needed for this setup?
What felt dark that day? What does that even mean?
You keep giving bizarre and sideways answers.
I asked what is the room dimension and you respond with viewing area. That's not what I asked.
It's very strange to just change the lamp without knowing the hours. Why was it changed, became too dim?
How many hours a day was the projector used?
How many months between changes?
Anyway I won't try to decipher your answers so I'll give some general info.
The lamp on the 5050UB is not that different from the 8350. Projectors with laser/led light sources don't have yet the picture quality of a lamp based projector. If it was for sports via cable only, that would be different.
It's also a problem since you don't know the hours on the lamp when it was changed, and it's not clear why.
Laser projectors for instance can have a life of ~20 000h, at which point the source is half as bright.
A projector setup with an ALR screen is possible with a few conditions:
With angular ALR screens light must not come from the same source as the projector. So the door behind the seating will have to be covered. With some sort of curtain/shade.
Angular ALRs are like a mirror. If the light comes from one side, will be reflected to the other side. If it comes from the projector area, it will also be reflected towards the viewer.
The projector must be placed on the central axis of the screen, perpendicular to the screen.
During the day the image will be more or less acceptable IF the projected image is bright. Ambient light will wash out the darker parts of the image, regardless of the projector and screen.
The reason I asked for room dimensions and not "viewing area" is with a few exceptions, ALR screens require to be placed at a certain distance from the screen to avoid visual artifacts like hotspots.
The general ratio is 1.9x screen width. For an 120" screen that would be ~16-17'.
A projector capable of this throw ratio is required. The TK850 has a throw ratio of up to 1.47x. Not that many models have this kind of specifications, and most of them are Epson.
The screen must be black blocked to stop light coming from behind it.
That Elunevision ALR is not very good at ambient light rejection. For a more aggressive type fabric try the Cingrey 5D, Slate 0.8, or other screens that have a small half gain.
The smaller the half gain, the better the light rejection capability.
Half gain can be vertical or horizontal.
Half gain is also the angle at which the brightness is half what it would be when viewed from the central axis.
Here is a review of ALR screens which note some of the half angles:
It's missing the Cinegrey 5D which a 40 degree horizontal half angle.
The horizontal half angle is mostly noted, the vertical one less so.