Joined the forum because I recently became an LK990 owner and thought Id give my 2 cents for what its worth.
I’m not a professional installer nor a calibration expert. I previously owned an Epson 6030UB and 6040UB. They were fair but just couldn’t meet my lustful desires for a truly big beautiful picture.
I purchased my LK990 partly due to conversation I read here on AVS Forums. Being such a new unit, there’s not much info out there. I’m projecting the LK990 image on a specially prepped 150” diagonal section of wall painted with a bright white reflective paint. Nuthin fancy but really smooooth.
Out of the box, this projector can put out a pretty decent image, but once playing with adjustments, you can bring this thing to life and output some awesome and beautiful picture. While most hype on projectors claim that 2000 – 2500 lumen brightness is plenty for home use, I call BS on that for sure. The 6000 lumens of this projector pushes the picture to rival most any 4k flat panel out there, and yes, even the OLED sets. The HDR10 capability is just as awesome as the projector covers all color space BT.709, BT.2020, and DCI-P3. Again, I am no calibration expert, but adjusting a little of this and that with HDR brightness, preset gamma settings, color enhancer, etc., this thing will flat put out a 3d looking window image that you swear you could walk into. Ambient light has little effect. The picture is just as clear colorful and bright in a lit room as it is in a totally dark room. The 6000 lumens IS KEY!
Personally, I think all the talk about calibration is a waste of time because when you have something that will project an image this strong, bright, and beautiful, you can and will want to take it beyond basic one size fits all settings. It depends on what you are watching and I'm always making small tweaks depending on the source image that keeps setting new heights. There are enough settings on this thing to satisfy any button pusher junkie for hours on end.
The only cons I have experienced are the lens shift adjusters are pretty sloppy and as far from precision as you can get, although once you get it set and positioned, its no longer an issue. Also, the remote control is a really cheap piece. Very disappointed in that. Maybe BenQ will come out with something better if they get enough complaints. Other than those two things, this projector is excellent whether watching Blu-ray, youtube, home video, HDTV, or whatever the source. It does a superb job of upscaling HD content as well. Sports programming is outstanding. You would swear you are actually in the stands at the event you’re watching. High speed action such as auto racing is clear as a bell. No motion blur. I don’t play games on this but I would assume the image has just as much quality as any other source. I have no idea about lag, but high-speed motion is so sharp and clear, lag is probably pretty much a non-issue.
I can obviously highly recommend this projector. Cant beat it for performance and price tag. It will awe you even though its not pushed as a home cinema unit, it does home cinema superbly. I have a 10 bit HDR PC monitor to the side of my chair and I can sort of view the image on both at the same time. The projected image gives my PC monitor fits in comparing quality of picture. The projected image of the LK990 really is that good. and I'm not even using a $3k screen! If you can't afford a 150" 4K flat panel, here's the next best thing.
Hope this is of use to someone,