Hi Andrew and thanks for taking an interest…
Basically Joseph Holmes has created a medium sized color space ( smaller than ProPhoto and bigger than Beta RGB and Adobe 1998.This space is capable of producing more saturation than the space size itself can physically produce by the addition of and implementaion of 15 individual incremental VARIENTS (alterations) from mild saturation increases to garish saturation increases. Comes in a package…all the varients are utilised through the medium of ASSIGN PROFILE in your Application and not through Convert Profile…no harm done to your file but the color can be simply changed to your liking …just looks the way you want it without any posterisation or structural damage to your file numbers. In the package there are another 15 Varients that go about Desaturating your image incrementally to a genuine B/W
Joseph Holmes Color space goes all over the place without changing shape itself.Where all this gets to is in the printing side of the house…REDS ORANGE YELLOW are utilised right out to the printable edge …also Magentas and a very decent bit of Blue hums on paper. The sacrifice is that the greens are not indulged beyond what you can print.And you haven’t used a huge color space in the first place that now requires squashing down to run smoothly through your printer profile causing problems and faded colors.
If you work on screen exclusively then it may not be particularly beneficial .
Sorry for being so long winded.