To begin, I started with my laptop connected via HDMI and fed the K11 its native resolution (858 x 600). With this input and using the Bright mode, the K11 provided a very nice, sharp image. Somewhat surprisingly for a Bright mode, colors were well saturated and quite accurate. Switching to Presentation mode, I felt the colors appeared washed out and lost accuracy. Video and Picture modes also displayed well balanced color, albeit at a drastic reduction in lumen output as compared to Bright mode. Game and Standard mode were just okay. As the colors can be improved through the use of some of the controls mentioned in the Setup and Menu section of this review, you can pretty much tune the projector to your liking, although with a maximum of only 200 lumens available, I don’t see any reason to use anything but Bright mode in anything but a pitch black room.
Photo presentations look very nice with the K11, again in either Bright or Picture modes. Switching over to the K11’s VGA input provided no noticeable changes in color reproduction.
Typically, mini projectors have an issue with brightness uniformity, as there can be a noticeable drop in brightness from the center of the displayed image to the edges. The K11 did quite well in this regard, with less than a 20% drop along the edges of the displayed image
Acer K11 Projector: Readability
The K11 provided a very sharp, clean image with any of our text-based source material. Our usual spreadsheet, which has a range of text sizes and colors, was easily readable for all color and size combinations (from 8 pt. to 36 pt. text and white text-on-black or yellow text-on-dark blue backgrounds). Of course, our projected image was only 50” diagonal, so we would expect better sharpness from such a small image.
Switching to higher resolutions and aspect ratios than its default 858 x 600, the K11 performed very well. Moving up to 1280 x 800 (higher resolution and different aspect ratio) resolution, the K11 continued to display a sharp, clean image. Small (8 pt.) text remained quite readable and there was no color separation or overlap. As we’ve noted in the past, compression and scaling technology has gotten to the point where the display quality of non-standard resolutions and aspect ratios is nearly indistinguishable from the projector’s standard resolution. Nonetheless, such ability is not expected in such a small, low priced projector like the K11.