Quote Originally Posted by markbau View Post
the claim that this method produces prints unattainable with a single filter setting.
I don't think anyone makes that claim anymore. When people convert to a new religion they tend to be zealots for a while and make all sorts of claims, possibly to suppress their own doubts about their new ways.

Compared to claims of extra terrestrial abduction, invisible trilateral world government, bigfoot sightings and government bail-out programs, claims for split-grade printing magic are pretty tame stuff.

The big downside to split grade printing is that it gives you sod-all control over the midtones. For this reason photographers tend to abandon the technique as they gain more control over materials and processes.