Originally Posted by tf4
I just purchased this projector and am having a terrible time calibrating it to fill my SI HD screen! I initially started out using mostly the lens shift instead of the controls I have on my peerless but it was giving me this strange angle at the bottom that I couldn't get rid of (the top was aligned but the bottom was drooping down in the lower right, needless to say it was annoying when watching something. I now have mostly used the Peerless to angle the whole projector down and then use the keystone to straighten it out, however now my picture is more of a BOX instead of 16:9 so when I try to fill the screen it crops the top and bottom on the felt of the SI. I am going crazy with this I have adjusted 5 ways from Sunday. Is it possible I have a bad unit?
The problem is that you are working in three planes all at the same time, and adjusting any one affects the other. The one thing you definitely should avoid is using keystone because that significantly degrades the picture quality.
Assuming your PJ is more or less properly positioned - ie in more or the less the centre of the screen (left and right) and more or less at the top (up and down), then this is how I would tackle it:
First of all, center all the various 'controls' available to you - that is, the adjustments on the mount and the horizontal and vertical shift adjustments on the PJ. Ensure no keystone correction is being used in the PJ. Make sure that the screen itself is perfectly aligned and parallel to the wall it is mounted on and to the PJ. The screen must be properly horizontal and vertical - use a spirit level to check.
Focus the PJ and use a test pattern designed for lining up a PJ. If you don't have a suitable test pattern on disc, then the grid pattern in the Epson which is designed for lining up the RGB colors is good for this.
Project the pattern onto the screen. Don't worry if it is off to the left or right, or top or bottom at this stage (shift will deal with that later). Use the PJ's zoom to 'fill' the screen as much as you can.
Now, using the controls on your mount, line up the top edge so it is exactly right for the screen (even if it is a little high or low at this stage). Then look at the bottom edge - is it also lined up, or is it sloping off to one side or the other? If it is sloping, even though the top is right, then this means that the PJ is not parallel to the screen and you will need to rotate it in one direction or the other until both the top and bottom edges are right. Use the PJ control for YAW for this. (Refer to the diagram below).
You will now probably see that the left and right edges do not line up properly. Again, using the mount controls, adjust the PJ until the left edge lines up properly. If the right edge is now not lined up properly, this means that you will need to adjust the pitch and/or roll controls. If the image is trapezoid, you will see the effect of using the relevant PJ controls as you make adjustments. Once you have this right, you may need to go back and adjust the yaw again.
Once you have done all this, you should now have a picture that is 'square' to the screen but may be higher or lower or off to the left or right. Now is the time to use the PJ shift controls to bring the picture to the right place. The Epson has a huge range of shift adjustment so you will be sure to have more than enough for your needs.
It does take quite a lot of time to line up a PJ properly, especially if it is the first time you have done it. Having a good mount, with good micro-adjustment capabilities is a real boon at this stage of setup. Be patient, do one thing at a time, and you will get there. Good luck!