Originally Posted by teeger
I notice on mine that (when displaying the grid pattern) that the left side of the image shows flaring (chromatic aberrations) - making the left side slightly blurry looking - while moving across to the right the image becomes sharper. The softness is apparent from the left to approx. 5 or 6 of the white vertical lines before the image is pretty free of this soft effect. I notice that at the top of the image, that this same flaring is seen seen in the first few top horizontal lines too. Because my projector is upside down on a shelf, I have used the vertical lens shift to its fullest. Being upside down, I have the lens shift cranked all the way to the bottom-most setting (so that it projects higher when placed upside down).
Is this the kind of effect you are seeing? Over the weekend I will see if backing off from the extreme of this setting makes the image a bit more uniformly sharp. I still find the overall pic quality of this BenQ (even with this noticeable optics issue) quite remarkable. No lens is perfect . . . BUT . . . I would love to eliminate any degradation of the image where possible.
I have a replacement unit from BenQ which is interesting in how it squares up to the screen . . . the image is the right height both on the left side and right side. The first unit looked like the shelf was off kilter a bit making it appear that the projector was projecting on a shelf that was lower on one end / higher on the other. This unit it looks like it is projecting perfectly where the other didn't . Has anyone else notice this? I wonder if sometimes the DLP chip might be installed on a very slight angle, making projector placement a bit more difficult that one would like.
I could be seeing the same thing. After looking more closely at it, it seems to start at the midpoint of the image — very very slight there but each line gets a little "softer" as I go up the image. The top three horizontal lines, if I perfectly focus the lower lines, get this flaring. . . looks to be slightly red.
The projector is currently on a table. The "flare," as you put it, shows on both the horizontal and vertical lines however, it's less pronounced on the vertical lines, and it stays blurred regardless of my angle or distance. However, like you state, the picture is still very good when watching content.
If I focus on bringing the top lines in focus I can get them all pretty similar, but not as sharp as I can get the bottom half by itself. Yes, text is till legible — writing this on it right now.
I might just lower the screen to where this issue is no longer an issue. . . though that may be a problem if I mount it on the ceiling later in the final setup — 8' ceiling don't allow for much lowering of the projector however I do like the image higher, generally.
As to your question. I may have that same issue as well. It was driving me nuts getting this thing squared properly but I think I've got it. Had to use a good amount of adjustment on the one adjustable leg of the projector but then again, I'm using a temporary DIY screen on a very crooked wall.
Thanks for the info.