Can one access the MatCap material texture image? I want to get my hands on the 1024x1024 pixel image that ZBrush generates when you make a MatCap. I realise there is something ‘special’ about these textures, (they’re tagged as being 96 bit in depth, for goodness’ sake 
) but all I need is a decent pixel resolution, 8 bit version. The Quick Info popup version is only 260x260 pixels.
Any advice, deeply grateful!
Cheers,
Rory