Originally Posted by ac3knight
Just got my unit. Can keystone adjustment be implemented via firmware? There seems to be some picture distortion due to the lens/mirror curvature.
Hi, curves on the projected image sounds like to be caused by a uneven wall/screen.
B5U is a short throw projector (and its throw ratio is one of the shortest in the market which is 0.21:1). The benefit of the ultra short throw ratio is that the projector requires minimum distance to project a big screen (for B5U, you only need 19.5cm for 100" screen), so you do not need special TV cabinet/table with larger depth for the projector (other UST projectors with longer throw ratio may need at least 40cm distance to project 100" screen, plus the depth of the projector itself, you will need a TV cabinet with the depth of at least 90cm which most of the TV cabinets/tables do not offer) .
However, it also means you need a perfectly flat wall/projector screen to project the image, any slight curves on the wall will cause distortion as you currently got.
Attached are few images to demonstrate the curve on image edge caused by uneven projection surface from previous customer's feedback.
Regarding keystone adjustment, B5U does not support keystone adjustment and keystone adjustment won't help for those distortions caused by uneven wall/screen like the situation you currently have. Keystone adjustment only adjust certain points (in most of the cases, just the corners of the image), so, even with keystone adjustment, the top/bottom edge will still be distorted if your wall is uneven. Please check the attached image of keystone illustration to help you better understand what do I mean. So, basically, if your wall is uneven as it is, even with keystone, you may still see those curve.
Our advice to fix the curves on projection image is to check and fix the uneven part of your wall (by sanding it/repaint it) or get a flat projector screen (those soft, standard projector screen won't work as they all have curves and works no better than a wall, you need a tensioned/fixed frame screen for UST projectors which provides a perfectly flat projection surface).
Regarding the firmware, the last firmware is V7.50019, the beta firmware is for HDR performance improvement. A stable firmware OTW update will be available at the beginning of May, we are still in the final stage to test it.
If you require any further information, feel free to contact us or your dealer, thanks.