The ViewSonic PJ501 looks suspiciously like the Hitachi CP-S317W. If both projectors have similar cases and lighted control buttons, that's because Hitachi also manufacturers the ViewSonic PJ501. Despite the PJ501's 1,500-lumen rating (the Hitachi model's rating is 1,700 lumens), the PJ501's scores were very similar to those of the CP-S317W on our brightness, brightness variance, and contrast tests.

The PJ501's image quality was fine, with excellent convergence and smooth color ramps. Unfortunately, focus was soft in the top corners. On the video images, facial tones had pink and olive streaks. In addition, the noisy cooling system leaked lots of heat and light from the back of the projector. And the tested contrast ratio was unimpressive.

The PJ501 is a better buy than the Hitachi, but even better choices are available. Turn your attention back to the NEC VT460 or the Sony VPL-CS5 SuperLite instead.