This is a rather tough one, because, in the purely digital realm, it's not necessarily easier than the analog-digital mix that involves scanning film. There is a difference between really good and "good enough."
Like a lot of things in photography, it depends on one's standards, especially minimal standards. If you're talking anything from 4x6" to 8x10", it's astounding how much you can get away with and still come up with at least "okay" images: we could've stopped at about 3-4mp and simply stayed there. But people (apparently, according to the recent e-mail offer I got from Calumet) still pay 25k for the latest Phase One MF back, or 6-9k for the latest high-spec FF Nikon/Canon body for pro work. Are all these guys/gals "full of it" in terms of desiring all those megapixels?
A small part of why I've stuck with film throughout all this is that I didn't want to get caught in that Not Good Enough/Wasteful Overkill matrix. When I vetoed digital in favor of my current Hexar system eight years back, the dSLR SOTA was around 3 megapixels or so; Certain Pundits were telling me to toss my film burners overboard, that these digital juggernauts blew the best my then-current cameras had to offer into the aether. Call it clenched-teeth stubbornness (it was that, to a degree), but I wasn't biting.
Fast-forward to now: dSLR-wise (not counting Leica's S2. basically a new format), we're cruising just south of 30MP and still people are arguing: too much? Not enough? And, for what? Magazines are dying by degrees (VIBE magazine just bit the dust, which is shaking more than a few people in the business up) where, purportedly, such pixel-fortified images might make some sense, but the near-future...?
(Attempts to snap out of Morrissey-level depression.)
For "general purposes", some say 6MP is plenty; others say 8MP. (I'd say that, but it's largely because the two digital jobs I have on hand just happen to have that spec.) Where's this stuff going to end up? What if, however lofty our plans and credentials, our only future medium is a living-room wall at a freaking 72dpi...and that becomes the "new" standard?
(Fred knocks on the door, with a Chill Pill and Bacardi & Coke.)
Sorry...I'll knock it off this time. Really.
Thing is, we're dealing with a medium which, at this point in time, is elastic in some ways, and somewhat brittle in others. We're also a bunch of hard-copy guys and gals in a world that's becoming at least somewhat less so, and where the notion of "quality" moves very much on a sliding scale, and past references fade from consciousness. Is this where the megapixel race hits the ugly brick wall?
- Barrett