Hopefully not an entire ruined roll, but I reckon I've messed up a few shots today. The last time I used the F70, it had some Adox Silvermax loaded. As Silvermax isn't DX coded, I manually set the ISO on the camera (actually to 80, rather than the box speed of 100). Today, I loaded some HP5, but forgot to switch the camera back to DX mode and so I shot 8 frames of 400 ASA film at 80 ASA. I think I've also probably messed up a couple of shots by paying attention to the aperture and composition while not checking the (proably far too low) shutter speed, and also taken three shots indoors with the polariser still afixed. Not the most competent I've ever been, it must be said. Hopefully I have enough decent results to make up for the potentially ruined shots!