Sure, totally agree. But often the reason isn't too profound. Like, the other night I took loads of pictures of swans in relatively low light, at long focal length. They were swimming about, so most of them weren't sharp. I already know my follow focus and predictive focusing skills need improving, so admiring all the not-quite-sharp-enough evidence of my rubbish technique isn't much fun, or very helpful.

Once you've done the learning bit, it's nice not to have a damn great pile of garbage reminding you of how rubbish you were - or still are, in my case.

Been there, done that. Heartbreaking, sometimes.

Thank heavens you can destroy the evidence so easily with digital, huh?

Anyway, I think of it this way:

Far better to throw away the unsatisfactory than be satisfied with mediocrity.

Turn the rotatey thing from 'off' to 'on', then press the silver bit in the middle.

Trial and error after that, surely?

Like, duh...

That's a minimum requirement...

Me too, South West.

Erm, what do Pentax groups get up to?