BenQ 1080p DLP Home Theater Short Throw Projector (TH671ST), 3000 Lumens, Low Input Lag for Gaming, Ambient Light Sensor

Product Information

Treat your eyes to the brilliance of TH671ST’s Full HD 1080p visuals, with amazing detail clarity and sharpness. The BenQ TH671ST offers the advantage of Keystone Correction. This handy feature offers great benefits when installing. With the ability to digitally shift the image by +/- 40 degrees in the vertical plain, the TH671ST can be fitted in more awkward locations and enables a wider choice of screen options. As with virtually all inexpensive home theater projectors we've tested, the brightness variation is easy to see with a 100% white or light colored image. With the projector sitting on a table, brightness is highest at the bottom center of the image, and gradually falls going up and to either side, making the upper left and right corners the dimmest. Those who are particularly sensitive to brightness variations may find this unacceptable. However the difference is hard to see with any image that breaks up the field of view. Countering the trapezoid effect when the projector must be placed off-center, such as simple placement on top of a table, vertical keystone adjusts the image for a professionally squared image. Keystone correction makes it simple to project ideally aligned images from a variety of locations. Passengers is one of the more digitally-scrubbed titles I’ve seen recently. It’s a great looking disc and it shone on the BenQ. Much of the palette is metallic but the warm tones of the ship’s bar and character’s skin looked just right, natural and properly saturated. Color accuracy is still important even in the age of new technology and the TH671ST gets it right, with or without calibration. I switched to an unadjusted mode just to see and the difference was small. While I always recommend going for the highest possible quality, those who don’t chose to calibrate won’t be disappointed in the image.

Video Optimized Lumens. Both the Cinema and Sport modes are good starting points for optimizing settings for video. Both deliver color that's well within a realistic looking range and close enough to accurate so you wouldn't know that any color is off without a reference image to compare to. However, Sport mode delivers a higher ANSI lumen measurement and brighter shades of yellow, which prove to be more accurate when comparing with a reference image. Brightness. The BenQ TH671ST test unit came in at 2,638 ANSI lumens in our tests, a solid 86% of its 3,000 ANSI lumen rating. With the 1.2x zoom lens at its widest angle setting, our measurements for Normal and Economic power modes are as follows: Color Preset Mode Performance. Most of the TH671ST's color modes are usable straight out of the box, even for film or video, with varying degrees of color accuracy. As with the brightest mode for most projectors, the TH671ST's Bright mode shows a slight green shift. However it is less than with most projectors, particularly those in this price range.Low Lamp Mode. Compared with the full power mode, Economic mode reduces brightness by about 36%. Two other settings, SmartEco and LampSave, are dynamic power modes that are intended to lenghthen lamp life by adjusting the power level based on scene content. With a standard 100% white image, we measured SmartEco at the same brightness as Normal power mode. LampSave peaked at 1,767 ANSI lumens in Bright mode, just a touch brighter than Economic mode. BenQ says there is no noticeable effect on the image with these modes, nor did we observe any. Input lag. With Fast Mode on, the TH671ST's input lag is 16.4 ms in Bright and Sport modes and 16.6 ms in Vivid TV and Game modes. Both are fast enough for serious gamers. Input lag for Cinema mode is only slightly longer, at 18.8 ms. With Fast Mode off, the lag jumps to about 50 ms for all modes but Cinema, which is 52.2 ms. The default setting for Fast Mode is On for Game mode, and Off for all other modes. Zoom Lens Light Loss. The 1.2x zoom isn't large enough to curtail brightness significantly at the telephoto end of the lens. You can safely ignore the potential light loss when choosing how far to put the projector from the screen.

Those seeking to to improve contrast will want to experiment with the LumiExpert feature. LumiExpert detects the ambient light level and adjusts gamma appropriately for the lighting. You can also turn it off and adjust its setting to make the overall picture a little darker or a little brighter at any given ambient light level. We found that choosing the right setting can significantly increase contrast and the sense of three dimensionality in dark scenes.If your selected projector has a Zoom Lens then the projector's Throw Distance or Image Size can be finely adjusted by moving the in your room. The position of the projector in your room changes because you will need to move the projector closer or further away from the screen With its short throw lens, the TH671ST is ideal for use in almost any room. Simply place the projector on a coffee table 1.5 metres from the screen and enjoy a 100 inch image. distance between the lens of the projector and the surface of the screen. On the graphical representation of a screen in the middle of the lumens of high brightness let you watch in relatively bright settings or even with lights on. Perfect for meeting rooms.