Right, got another question, that is possibly a dumb question, or not... Perhaps one for @moroseduck, @Neil Piper or @Davis? So far, I've been developing just Ilford HP5. I've shot it at box speed and I've also successfully pushed it twice to around 1600 iso by developing it for 17 and a half minutes. Should I really be adjusting my stop (1 minute) and fixer times (6 and a half minutes), when pushing film or shooting film with a different speed (such as Ilford Delta 100 or 3200 - which I've recently treated myself to)? In other news of my continuing progress of film developing, I successfully developed my first roll of 120mm yesterday. Also developed a 35mm roll from my Sprocket Rocket. Nothing came out of the Sprocket, I either bodged the dev or the camera is as reliable as a sloth at a breakdancing convention - but yeah, another camera that I'm consigning to the s*** can.