For my evaluation of the V7850, I calibrated the projector for the User color mode (color temp./grey scale and gamma) and I also did a full calibration for one of the ISF color modes, more on that below.
However, a ISF certified calibrator can use a password to gain access to two additional color modes call ISF Day and ISF Night. What is lacking is a full color management system (CMS) set of adjustments. adjustments, RGB gain and bias adjustments as well as preset gamma adjustments. The available adjustments for the user mode include, in addition to the usual brightness, contrast, etc. Of the user accessible color (i.e., picture) modes only the single “User” color mode allows for picture adjustments to made and stored for subsequent use. The V7850 offers only a limited ability for the owner to calibrate the projector without having a professional calibration from an ISF certified calibrator.
34%.īrightness uniformity was only fair with some visible brightness decrease at the top corners, when the projector was table mounted.Īs for color uniformity, when displaying a full white test image I observed some yellow along the bottom edge of the image. However, the “Bright” color mode has such poor colors I wouldn’t suggest this mode is useful for home theater application.Ĭhanging from high lamp mode to Eco (i.e., low) lamp mode decreased the light output by approx. Thus when set to “Bright” color mode and with the zoom set to its maximum value the V7850’s light out goes up to just over 2050 lumens, which is just a little short of the claimed 2200 lumens.
Acer V7850 BrightnessĬhanging the zoom lens to the maximum setting increased the projector’s light output by 14% and going to minimum zoom decreased the projector’s light output by -15%. All measurements were made with the lens set to it mid-zoom position and the lamp in in the high mode, except for the “silent” color mode which by default uses low (Eco) lamp mode. The following table shows the measured brightness of the projector for each of the factory preset color/picture modes.
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