The TW5800 features a big step up in video processing power over the TW3800 too, by carrying the HQV Reon VX engine. And it boasts a useful anamorphic lens mode for use with third party anamorphic lens options.
One further key justification for the TW5800's price hike over its mid-range sibling is its provision of frame interpolation processing. As the name suggests, this processing figures out the content of extra image frames that it can insert into the image stream in order to make motion look much crisper and smoother.
Although the TW5800 contains bags of picture adjustments, some of which we'll cover briefly in a moment, it's actually sublimely easy to set up. This is chiefly thanks to a superb x2.1 zoom lens, and bags of both vertical and horizontal image shifting, making it easy to get an image perfectly positioned on your screen in a wide variety of room sizes and shapes.
Beyond this basic level of setup, you can choose from a decent and effective selection of image preset options, or get involved with all manner of manual fine-tuning if you're feeling confident. There's a very flexible and reasonably user-friendly colour management system, for instance, as well as simple colour temperature and gamma adjustments. You can choose not only if you want the dynamic iris system in play, too, but also whether you want it running in a normal or high-speed mode.
Then there are skin tone adjustments; lamp output adjustments; an optional contrast booster; separate standard, mosquito and block noise reduction routines; and the facility to adjust the strength of the frame interpolation system between off, low, normal and high.
If you're worried that all of these set-up options are going to bewilder you, then you should note that the projector is built to ISF specification, meaning that an approved Imaging Science Foundation expert can come in to your home and professionally calibrate the TW5800's picture to precisely suit your room environment. For a fee, of course…