Underlining this apparently high value situation, moreover, is the standard warranty InFocus does for the SP8604: namely 5 years parts (excluding the fan, power supply, colour wheel and light tunnel, which get three years), 3 years labour, plus a 1 year lamp replacement warranty.
Our first clue to the SP8604's similarities with the Vivitek H5080 comes as soon as we look at it, for it's more or less identically designed. This means it's a quite large, chunky bit of kit, with a gently arced and glossy top edge, a centrally mounted lens, and ribbed side panels for letting out heat.
The only obvious difference is that while the Vivitek had a silver ring around the lens, the InFocus has a metallic blue one - a wry little nod, we guess, to the peculiar and certainly flawed decision to put a bright blue neon light circle around the lens of the SP8602.
Directly above the lens on the SP8604's top side is a slide-forward panel hiding two of our favourite projector things: simple knobs for optically shifting the image horizontally or vertically.
There really is no overstating the importance of such tools on a mid-level projector, since they let you get an image perfectly positioned on your screen - even in potentially quite awkwardly shaped rooms - without having to digitally distort the image via keystone correction.
The SP8604 isn't quite as generous with its optical zoom as we would ideally have liked, only offering 1.25x. But to be fair, you can buy the projector with short (fixed at 0.77), standard (1.54-1.93:1) and long-throw (1.93-2.89:1) lens options, so you should be able to get a configuration that works for you.
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