There isn’t much information on the web about using HIE infrared film with the Ilford one-shot developers like LC29 and Ilfosol.

I’ve successfully developed HIE in Ilfosol 1:9 for 8 mins at 20 deg C.

This was with the camera TTL meter set at ISO400 and a dark red filter on the lens - I’ve used the R25 B+W and Nikon “deep red” equivalent, not the dedicated IR filter that Hoya does. I’ve also used Ilford LC29 developer 1:19, same conditions at 5 minutes dev time.

I always found it was best to underexpose in overcast or indoor conditions by at least one stop with this camera set up - infra-red film doesn’t really come into its own until there’s clear sunlight on the scene.

Example: Cutty Sark in Greenwich - compare with these taken at Tikal that don’t really “work”.

I’ve used the Ricoh GR1 successfully with HIE; there’s some fogging at the bottom of the frame from the LED frame counter in the camera…say about 1-2mm on the film itself. The Contax G1 also works well with HIE with no fogging.