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

Product Information

With an outstanding brightness figure of 3000 ANSI Lumens, the TH671ST suits all types of lighting conditions. Even during daylight conditions with curtains or blinds open, the TH670 produces a watchable and detailed picture - perfect for gaming on a weekend afternoon. For optimal performance, BenQ’s LumiExpert technology detects lighting conditions and automatically adjusts the brightness to suit. 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. Ventilation is generous with a quiet fan that I could barely hear at its top speed, impressive considering the bulb is 240 watts. There is a bit of light leakage from the grill and from the lens controls on top. That’s where you adjust zoom and focus with firm precise movements. Also up here are basic control buttons for power, menu navigation, and source selection.

LumiExpert is something I had not seen before. It works with an ambient light sensor on the chassis’ top and adjusts gamma on the fly according to your room’s lighting. In my test, it had a very subtle effect but I found better quality in my totally dark space with it left off. You can adjust the amount of compensation with a six-position slider. 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.Prices valid in stores (all including VAT) until close of business on 29th November 2023. (Some of these web prices are cheaper than in-store, so please mention that you've seen these offers online.) Treat your eyes to the brilliance of TH671ST’s Full HD 1080p visuals, with amazing detail clarity and sharpness. 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

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. watt speaker delivers surprisingly robust audio for such a small projector, with enough volume to fill a large family room; five sound mode presets plus User mode. As an avid movie lover, Chris was unable to turn away the 50-inch Samsung DLP TV that arrived at his door one day, thus launching him irrevocably into an obsession with home theater. Dissatisfied with the image quality of his new acquisition, Chris trained with the Imaging Science Foundation in 2006 and became a professional display calibrator. His ultimate theater desires were realized when he completed construction of a dedicated cinema/listening room in his home. Chris is extremely fortunate that his need for quality audio and video is shared and supported by his wife of over 25 years.Kong: Skull Island is a reference Blu-ray in its HD version. Here, I looked for the warm colors of the seventies as the characters visit a strange place filled with horrific CGI monsters. Not only did details like Kong’s hair pop right out, the image had lots of depth despite a flat color palette. Though much of the scenery appears shot through a filter, I could always see the finest textures and most subtle elements. Superior motion quality was again evident as objects flew with lightning speed across the screen without even a hint of blur. Given 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. 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. 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. 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.

represents the diagonal distance between the top right corner of your image (screen) and the bottom left corner of your image (screen). On 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: Brightness is another key feature. We measured the TH671ST at a little over 2,600 ANSI lumens, which is enough to light up a 130-inch 1.0-gain screen in moderately bright ambient light. Even its video optimized setting, at a measured 1,887 lumens, is bright enough at the same light level for a 110-inch 1.0-gain screen or a 120-inch 1.2 gain screen. The bigger problem with Bright mode is the loss of gradations to the point of showing a hint of posterization in demanding images. Despite that, Bright mode with defaults is our choice for the presentation-optimized setting, even for presentations that include photorealistic images. Most people will also consider it acceptable for occasional use in, say, a family room in daytime when they absolutely need the extra brightness.

BenQ TH671ST Features / Advantages

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. TH671ST 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. BenQ recommends using High Altitude mode at 4,921 feet and above. With High Altitude on, most people will want to stay with Eco mode, which is quieter than full power mode with High Altitude off, but with a higher pitch that makes it a little more intrusive. With full power, High Altitude mode both increases volume and raises the pitch. Among the TH671ST's most noteworthy features is its 1.2x zoom, an unusual extra for a short throw. Any short throw lens lets you set up the projector close to the screen for a big image in a small room—for example, small apartments or dorm rooms. But a zoom lens adds convenience and offers greater flexibility of placement, letting you adjust the zoom, rather than move the projector, to match the image to the screen size. This is particularly welcome for portable use, where moving from one location to another means having to set up the projector each time. Portability is also enhanced by surprisingly robust audio for such a small projector. To determine the Image Size (screen size) enter a distance measurement number in the Throw Distance value box and hit the Enter

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. away from the screen or wall, the image will get bigger, and as you push the projector closer to the screen or wall the image will be smaller. To properly 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. lumens of high brightness let you watch in relatively bright settings or even with lights on. Perfect for meeting rooms.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.