All of this would suggest that the T91 is a projector that’s meant to stay put, on a trolley or perhaps ceiling mounted. And with the camera attached you’d not really want to be carrying it around for long. All told, both projector and camera weigh a shade under 4kg (3.86kg to be precise), considerably heavier than most notebooks. Without the camera attached, it weighs in at a more acceptable 2.8kg, but there are much smaller, lighter products around, such as InFocus’ LP600, which will be far easier on your shoulder.
This is a shame, because the T91 is equipped with some features that would come in useful on the road. Atop the machine, there’s a key that brings up a list of most commonly used set-up options, which means less fiddling about with menus. If you find the noise the fan makes intrusive (it’s actually not too bad in standard mode), the lamp can be dimmed and the fan slowed – handy in a small meeting room environment – though leaving the fan speed high will prolong the life of your bulb. A replacement after 2000 hours (or 3000 hours in economy mode) of use will cost you £392.66 including VAT.
There is, however, a shortage of input connections. There is no DVI input, for instance, though we had no problem with the signal lock using the supplied D-SUB cables. And though there are S-Video and composite video inputs, the lack of component video input is a touch disappointing.
On the plus side, the T91 performs exactly as you would expect of a quality DLP projector. Its contrast ratio of 2000:1 is much better than equivalently priced LCD units, while the colours are more subdued and far more natural should you need to display video, or photographic subjects using the document camera. The brightness, at an impressive 2000 ANSI lumens is equally impressive and enables use in brightly lit environments.
You won’t need a huge amount of space to get large screen sizes either. From a short throw of 1.5m, we managed to achieve a screen diagonal of 39in. The projector boasts a maximum screen diagonal of 246in, and you can set it up as close as 1.2m from the wall. There’s even the option to change aspect ratio, from 4:3 to 16:9, though with the native resolution stuck at 1,024 x 768 all this does is mask off the top and bottom of the projected image and zoom you in.
And though there is evidence of the dreaded rainbow effect that afflicts so many DLP projectors, especially with the screen size cranked up playing movies, we found that it wasn’t particularly intrusive when displaying more static, computer-based material. The quality of the picture in other respects outweighs any negative effects.
On the face of it, the T91 is a quality projector. Its performance and specification for this sort of money are extremely good. At just over £1,600 it’s not the cheapest unit around, but you do get an awful lot of projector for your money and we’d have no reservations about recommending it for all-round use. Incidentally, without the camera it will set you back £1,144, about the same as an InFocus LP600.
But despite the fact that the attached camera is a great idea, it is not without its problems and adds considerably not only to the projector’s bulk and weight, but also to the price. As a result we’d hesitate to wholeheartedly recommend this option, and suggest that you try one out before you consign your trusty old OHP to the skip.