The highest resolution supported by the Benq MW526 is 1920 x 1200 (WUXGA). That's over seven times the resolution of a 640 x 480 (VGA) projector, which is the most common resolution supported by 13000:1 contrast ratio multimedia projectors that are a similar age to the MW526.
A 1920 x 1200 (WUXGA) graphics resolution is actually the best supported resolution across all similar spec projectors that have been on the market for a comparable time to the MW526.
The worst supported resolution across similar types of data projector is 640 x 480 (VGA).
There are a number of other data projectors that support a resolution of 1920 x 1200 (WUXGA)|640 x 480 (VGA) currently available that you might also want to look at including the TW526, or the MS630ST both from Benq which is cheaper.
If you would prefer a multimedia projector with a higher resolution then you might also want to consider the Benq MX525 ($445.48) (1600 x 1200 (UXGA)|640 x 480 (VGA)) which is also cheaper.