Can some good folks here test out something with their HD33 (or your US equiv), i've had 2 units now which exhibit a bad issue and I know of another which is the same and i'm thinking that its a design flaw in the unit itself and that every one suffers from it.
First thing to do is make sure any edge mask is off or at zero, and also make sure no overscan/digital zoom is used so they need to be zero too, optical zoom doesn't matter.
Then play a movie or file of 1080p24 resolution and framerate, it has to be a full 16:9 film so no black bars (2.35:1), it works best with animated stuff like Toy Story or Bee Movie etc.
Ok, now if you introduce NEGATIVE keystone correction to the image then you will see a horizontal line on the bottom of the image, the more negative keystone is used then the line goes higher until at max keystone then the line is about a quarter way up the image, you will also see that the portion of the image under this horizontal line is offset, like a tearing effect.
This is the issue i'm having, it only appears on 1080p24 stuff and is more visible on animated stuff and only when any kind of negative keystone correction is used, the more is used the further the line goes up the image, and it doesn't appear to do it with 3d blurays at 1080p24 either.
I've had 2 HD33 units now on C03 and the latest C04 f/w and both exhibit the issue, another guy on a forum who has a 6 month old HD33 on C02 f/w has the same and i'm now assuming they ALL suffer from it and am trying to see if alot of others can replicate the problem because Optoma are saying that they cant which is rather convenient for them.
And before anyone starts with cables etc, i've tested each of my sources seperately and hooked up directly to the HD33 with a 1m hdmi cable to eliminate any other equipment failure and it makes no difference, the same effect is produced so it has to be a design flaw in the HD33. My sources are a Panasonic BDT300 bluray, Sony BDPS360 bluray, WDTV Live media streamer, Himedia 900b media streamer.
Any help is appreciated as I need some ammunition to go back to Optoma and tell them that they all suffer from this.