The highest resolution of the IN5316HDA is 1080p (1920x1080). That's over two times the resolution of the most frequently found native projector resolution of WXGA (1280x800). The resolution of all comparable spec projectors that are a similar age to the IN5316HDA ranges from nHD (640x360) (worst) to DCI 4K (4096 x 2160) (best).
There are a number of other data projectors that have a resolution of 1080p (1920x1080) currently available that you might also want to consider including the Acer P7505 ($1,638.85) which is cheaper; or the Benq SH915, or the Viewsonic PRO8520HD ($2,998.69) which has a better Rating.
If the resolution of this Infocus multimedia projector is not high enough for you then you might want to consider the Epson 1980WU ($1,143.99) (WUXGA (1920x1200 and higher rated) and higher rated) or the Acer P7605 (WUXGA (1920x1200 and cheaper) and cheaper), or the Hitachi CP-WU8440 ($5,648.99) (WUXGA (1920x1200 and cheaper) and cheaper).