I mixed about a litre of Ilford's LC29 developer a while back and have put maybe, geez, I don't even know how many rolls through.. probably about 20.
Anyway... I was wondering how "ripe" people let their developr get..
Do you count it's age by the amount of film it's seen or by how long it's been mixed up? Or perhaps a combination of both...
I know the manufacturer prints recommendations, but what do photographers out there do I wonder??