Originally Posted by wesleyb82
Hey "guy", thanks for your input. The pj is mounted from the ceiling, about 20' from a white wall, perfectly centered in the room, everything is square except it should be mounted higher for the height of my picture and about 10 steps of keystone was required to make it square. The last projector mounted in the same place was sharp edge to edge. The first PRO8200 I got had about 1/3 in focus and 2/3 out of focus- it was bad. The second unit had about 2/3 in focus, 1/3 out which was better but the problem is still definitely there. I was using the computer desktop to focus which is easiest for me to see the pixels/sharpness. I carefully focused to dead center and it slowly falls out of focus in both directions (left to right). My first thought was coderguy's which was a mechanical problem but this is the second pj I have with this problem so I am listening to what you're telling me and will take a look at the cables I am using.
The PJ is connected to a desktop with a 4' HDMI-DVI to a 4-1 monoprice switch to 10' HDMI cable. I will try different cables and see if it helps..... I think I can get a cable that runs straight to a source with out the switch.
New Egg wants me to speak to Viewsonic about this before they take any further action. On Saturday Viewsonic tech escalated my problem and told me someone would contact me today or tomorrow....
Any other advice or suggestions? Thanks much
I'm curious to see how your same "defective" projector performs when used on at a distance of 10' instead of 20', and without ANY keystone adjustment. Maybe pull your projector off the ceiling, and position table mount, 10' from your screen. Perhaps using this projector on a 160" or so screen, w/ keystone adjustment, is pushing the projector too hard? My guess is that you won't have serious focus issues on a 100" screen, with the projector square to the screen, and with no keystone, using a quality HDMI cable. Perhaps the viewsonic is just being pushed too hard when installing in your conditions (20' throw, 10 degree keystone)?
You might also try a trick mentioned in one of the early posts of this thread regarding overscan - set the proctor to a vga or s-video/composite input, and I believe you can make and adjustment to overscan - you may need to set the "special function" of the remote to be overscan - if I remember correctly. That might help you get closer to true pixel to pixel mapping. I don't know if it makes a difference in HDMI, but it is worth trying.
I know on my 100" screen w/ no keystone, I haven't had any issues with focus. I can set the focus while in the projector menu settings (to see text on the screen), and then I can adjust the "projector orientation" setting (table top v. ceiling etc, rear, v. front) so that the menu bounces to all 4 corners, and my focus is great on all 4 corners of the projector.
If you try that same test under those conditions, and still have focus issues, then I would agree that your projector has issues, and if a replacement still exhibits problems under those conditions, then maybe Viewsonic/Newegg had a bad batch.