The photo above was taken with a Adox Golf 63 at 1/200 and f/8 with Ilford FP4. No software enhancement was applied, just as it came from automatic luminosity of the scanner.
This Caffernal looks like a fine grain developer, low contrast and good restitution of the whole grey scale.
In the dilution 1:50 it takes a minimum of 60 minutes at 25ºC.
Now, comparing this deveoper with the Caffenol C+, also using Sodium Hydroxide as alkali, I found a way to change the properties of the developer, I am about to test it right now. As soon as I have results I will report here.
Aim of the changes is to make Caffernal even faster than it is. In comparison with Rodinal it is some 4 times slower or more. Also the contrast can be pushed a little, I think.