Guys,

I have a 9500LC that has unfortunately not received a quality set up since I've moved to Texas. :(

I've spent a few minutes on it here and there of course, and just a couple of weeks ago I upgraded my crappy focus coils to the newer ones which really helped.

Anyways, I have a DaLite High Power screen and recently bought a SilverStar to mail to a friend in China. See the review here if you're interested:

http://www.curtpalme.com/forum/viewtopic.php?t=3880&sid=7bb2b022ccd58eaf9ecc7fde9ae72d49

So I set this SilverStar so it's standing about 1" in front of my High Power. And lo and behold, my projector is focusing on it way better than it's focusing on my High Power. And I know that I set my optics & electronic focus to do it's thing on my High Power. So why am I getting better focus 1" in front of my screen? I even ramped focus up & down but it still focused better 1" in front of my screen.

Now, I am set to 100 maximum width for my screen image. 16:9 @ about 90" wide. Table mounted projector, angled so keystone is ~50. I do get great focus corner to corner, but the focus just seems to REALLY kick in about 1" in front of my screen.

Whats up with that! :D

CZ,

Are you getting better focus because of the Silverstar material rather than the 1" closer distance of the screen??

Terry

Terry it's tough to say. The Silverstar is fixed to a 1" deep frame, so I can't bright it closer to my existing screen, which is already fixed to the wall in such a way as it will not come loose anytime soon. :D

So it certainly could be the Silverstar material is just better for focusing.... but at 1" away from the existing screen, I have a hard time believing it would not have lost any edge it may have over the High Power. ?

If I don't get things figured out then I'll attempt to locate some heavy blank paper, like a 3.5" card and see if I'm focusing on that at 1" distance also. :)

Okay, I located several sheets of brilliant white printer paper and held it (stacked together) to my screen, then slowly brought it out. I seem to be getting the best focus at ~2" away from the screen! wow!

It's like this for all three colors.

So it could be your lens then, try moving the projector perhaps?

Hi KS, good to see you here.

After trying the printer paper, I'm sitting here wondering how in the world I managed to screw up my focus on all three lens. I have a mini-project upcoming on this projector soon that will require a complete re-calibration. So I'll take another look at the focus then.

As for now, I am in fact wondering about what you have suggested. Projector to screen distance. Could it be possible that my 'quee really doesn't like a maxed out image size and wants something closer to 90-95% width? Perhaps it is not liking the lens to screen distance.

I dunno. Moving my projector is unfortunately not an option. Matter of fact, if I weren't such a CRT believer, I'd have ditched her for a digital since I'm in such a tiny apartment now. But I've seen much better focus performance in the past from other Marquee. The only reason I've not been so down on it till now is because of my awesome corner focus due to the G90 lens I've fitted.

I can tell you for sure that I wish I never bought my Dalite screen. I have the cinema vision 1.3. On my screen, you can't see scan lines on it at above 720P because it bleeds light instead of hold it where it's projected. You can test it by putting a piece of white cardboard on the screen with blue easy release tape.
The best mechanical focus I ever got was from a Behr (flat) ultra white wall.

Chip

I can confirm some screens tend to give a bleed effect and others tend to accentuate sharpness. Actually when I went side by side with my behr ultra pure white flat screen and my current silver torus the torus made the behr appear to bleed badly. Both silver materials I have tried appear to give astonishing sharpness and I'm not going back to any white screen any time in the forseeable future.

There's just something about silver... Beyond just high gain...

Troy

There's just something about silver... Beyond just high gain...



Yeah, it looks really really cool on the wall. :D

I'm convinced that I somehow screwed up my optical focus somewhere along the line. It used to be really fantastic, and then I started poking around with my focus coils and did a re-set-up at that time and ever since, my magnetics have been better (less flare) but focus wasn't the same. I just assumed I had fixed one thing and screwed up another with the magnetics. :D


Must have also pushed my projector around at the same time maybe. Well I'm getting some different focus coils in the mail soon (thanks Mark!) so I'll do everything over from scratch at that point. I still plan to have mike@chtsystems.net do a calibration after I move into a house. I think he's the only well-known Marquee guy in this part of Texas.