lumens of high brightness let you watch in relatively bright settings or even with lights on. Perfect for meeting rooms. With default settings, Sport mode has a slight yellow-green shift, but it is easy to tweak for suitably neutral color, and without affecting either ANSI brightness or the brighter shades of yellow. BenQ's Color Management settings let you adjust hue, saturation, and gain individually for all six primary (red, green, blue) and secondary (cyan, yellow magenta) colors. With video optimized settings, the TH671ST can light up a 120-inch 1.2-gain screen in moderately bright ambient light using full power, or a 100-inch 1.2-gain screen in Economic mode. And the LumiExpert feature can adjust gamma automatically for the current ambient light level, with a dedicated menu button on the remote so you can easily tweak its effect to taste. Throw Distance. Unlike most short throw projectors, the TH671ST offers a zoom lens, which adds flexibility for positioning the projector to help make setup easy. Simply place the projector at approximately the right distance from the screen, and then fit the image to the screen by adjusting the 1.2x zoom, rather than moving the projector. The range for a 110-inch 16:9 image is roughly 5.5 to 6.7 feet. The BenQ TH671ST Projection Calculator will let you find the throw distance range for the image size you want. Vivid TV mode has a slight blue shift from neutral, which is much less of an issue than a green shift for most people, and in any case is slight enough that you're not likely to notice it without a reference image to compare it with.

Brilliant Color is a feature I’ve seen on pretty much every BenQ projector and it works differently with each model. The TH671ST’s implementation is subtle. You can barely tell a difference between the on and off setting. Ultimately, I preferred the picture with it left off. represents the diagonal distance between the top right corner of your image (screen) and the bottom left corner of your image (screen). On Lens offset. The lens offset for the TH671ST is designed for placement on a low table, with the bottom edge of the image falling somewhere between the lens centerline and up to 5% of the image height above it. For example, with a 100-inch high image the bottom edge would be anywhere between even with the lens centerline and 5 inches above it. The bottom edge of the image on our test unit was about 4% of the image height above the centerline, which is within typical sample-to-sample variation. 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. the graphical representation of a projector in the middle of the calculator, you will see dimension lines that will tell you the Throw DistanceGiven its design parameters, there is really nothing to complain about here. The BenQ TH671ST delivers accurate Rec.709 color, superb clarity, bright imagery, and low input lag just as promised. Though 3D isn’t a big draw for consumers any longer, it still looks great on this projector. With a compact chassis and short-throw lens, it can be set up just about anywhere. It’s small enough to be portable but that also makes it ideal for smaller media rooms where one might not have 10 or 15 feet of depth to throw a 100” image. The TH671ST can do it from just five feet away, on a coffee table, or hung from the ceiling.

Perfectly Long Lasting Picture Quality with DLP Projection Technology Digital Light Processing (DLP), awarded 2015 Academy Award of Merit (Oscar statuette), is the leading projection technology used in 90% of world’s digital cinemas and 100% of IMAX theaters. With DLP dominating the worldwide projector market with over 50% share, BenQ is today the #1 bestselling DLP. Fast Mode is the input lag control and you can leave it on all the time if you wish. It lowers latency and doesn’t affect normal video content in any visible way. It will certainly improve the gaming experience though. measurement between the front of the projector lens and the surface of your wall or screen. Using the Zoom Range SliderTH671ST maximises thrills in minimal space, requiring as little as 1.5m to project stunning 100” pictures. The shortened throw enables carefree enjoyment without space constraints or setup hassles. 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:

Zoom Lens ring on your projector. The Zoom Range slider in the calculator will help you calculate the changes made by a Zoom Lens. Brightness Uniformity. The test unit's brightness uniformity is 63%. Somewhat surprisingly—because short throw projectors tend to have problems maintaining uniform brightness—this is actually a better than typical result for standard throw home theater projectors in this price range. Cinema and Sport modes, as already mentioned, both deliver good color accuracy by default, and the best accuracy of any of the modes. Game mode straight out of the box is a little cooler than the Cinema and Sport modes, with a whiter white and skin tones that look a little too porcelain in some images. Treat your eyes to the brilliance of TH671ST’s Full HD 1080p visuals, with amazing detail clarity and sharpness.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. The perfect resolution for Blu-ray and gaming, 1080p Full HD gives noticeably more detail than standard HD resolution. Suddenly, you'll see texture in the grass on the pitch, subtle detail in wildlife documentaries and a whole new depth of image. The larger the screen and the closer you sit the greater the benefit, making 1080p more impressive on a projector at home compared to a TV.

Note that we saw an occasional skipped frame when watching movies at 24 frames per second (fps)—though not at 60 fps. Skipped frames are usually visible as a random, judder-like jump (only bigger) in the middle of a camera pan, or in the movement of an on-screen object when the camera is fixed. It seemed to happen more frequently with LumiExpert on, however, these skips were rare and not reliably repeatable. BenQ has been looking into the issue to determine if it's isolated to our set-up or something that might require a firmware correction. 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.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 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. is still a thing with some enthusiasts and BenQ always provides a good experience. The TH671ST is a little brighter than most and that just makes it all the better. Upon putting Cloudy With A Chance Of Meatballs in the player, the projector switched immediately to its 3D picture mode. This CGI animated feature is simple in texture but abounds with bright saturated colors. I never wanted for more contrast and the depth effect was clean and clear with no ghosting artifacts or motion blur. DLP is still my favorite technology for watching 3D and BenQ doesn’t just include it as an afterthought. 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.