The Q7 Lite supports a maximum resolution of 1600 x 1200 (UXGA). That's over six times the resolution of a 640 x 480 (VGA) projector, which is the most common resolution supported by multimedia projectors that are a similar age to the Q7 Lite. Across all comparable spec data projectors that have been on the market for around the same time as the Q7 Lite the worst resolution is 640 x 480 (VGA) and the best is 1920 x 1200 (WUXGA).
Other data projectors that support a resolution of 1280 x 800 (WXGA)|1600 x 1200 (UXGA) currently available which you might also want to consider include because of it's better review score, the Q7 Plus ($796.45), or the Q7 Plus ($796.45) both from Vivitek.
Data projectors with a higher resolution that might be worth looking at include the Optoma HD151 (1024 x 768 (XGA and higher rated)|1280 x 1024 (SXGA and higher rated)|1360 x 768 (WXGA and higher rated)|1600 x 1200 (UXGA and higher rated)|640 x 480 (VGA and higher rated)|800 x 600 (SVGA and higher rated) and higher rated) or the Optoma X351 ($599.00) (1024 x 768 (XGA and cheaper)|1280 x 1024 (SXGA and cheaper)|1400 x 1050 (SXGA+ and cheaper)|1440 x 900 (WXGA+ and cheaper)|1600 x 1200 (UXGA and cheaper)|1920 x 1200 (WUXGA and cheaper)|640 x 480 (VGA and cheaper)|800 x 600 (SVGA and cheaper) and cheaper).