I'd like to thank Richard Ward for sharing the image and data below.



Camera: 8x10 Shen Hao
Lens: 210mm COMPUTAR
Apertutre: f64
Exposure: 21 seconds
Film: FOMAPAN 100
Format: 8x10
Developer: Obsidian Aqua
Dilution: 1:500
Time: 12:00
Temp: 20C
Modified Paterson Orbital Tank
Process --

Pre-soak 3 minutes with tap water at 20 degrees C. Pour out, pour in developer, put down jug, start clock. For the first minute give constant, smooth agitation via four forward and back tilts then four left to right tilts repeated until the first minute has finished. Followed by four forward and back tilts then four left to right tilts on 9 minutes to go, same again at 7 minutes to go, and again at 5 minutes to go, repeated at 3 minutes to go and finally at 1 minute to go. Pour out and stop bath with tap water @ 20 degrees C agitated for four forward and back tilts then four left to right tilts. Pour out. Fix with Ilford Rapid Fixer 1:4 for 5 minutes agitate for 1 minute (as per developer) then at the end of 5 minutes, four forward and back tilts then four left to right tilts and pour out fixer into jug. Using the four forward and back tilts then four left to right tilts method, rinse with tap water at 20 degrees C, making 5 or 6 changes of water. Final rinse with Mirasol 1:400. Pinned at one corner only to hang and dry at an angle.

Derbyshire Wye - Reed Mace Bed - Below Meaden

The highlights seem to look after themselves with this developer of yours. It certainly works as a compensating developer when developed this way.

Very best wishes

richard