Originally posted by audiobomber Did you account for the 18-55's tendency to underexpose? I know from others' posts that this is a common failing (maybe universal?).
I don't have that problem with my original 18-55 or my 18-55 II or my wife's 18-55. So no, not universal. Of course, there are plenty of reports about underexposure in general, but those are mostly people from people not understanding how DSLR metering works, not from people doing controlled tests between lenses.
Of course, shooting at 50mm and f/5.6, that's wide open for the 18-55, and I do tend to get darker pictures at that apertures than when stopped down, suggesting that f/5.6 is probably a bit "optimistic" for maximum aperture. But I don't think I have *any* lenses that are not this way - they *all* shoot darker wide open than stopped down.
Quote: I'd like to see that. Do you still have a 6mp camera? Do you have a Jumbo box of Cheerios?
My wife still has her K100D. But you know how much work it was for you to do this? I'm in no hurry to repeat my tests.
Quote: Primes bring good things to the table besides resolution, but a body lets you get shots you will miss cycling through menus. More buttons, faster fps, more flash options, increased adjustability, heavy cropping, large prints, lower noise, better colours and wb, MTF mode, Live View, interval shooting, one-push bracketing, improved battery life, etc etc.
I still say those tradeoffs are going to be quite personal. the otentil advantages of a prime I think we both agree on. But the advantages of the upgraded body is another matter.
First, I think the jury is still out on the extent to which a K20D + 50/1.4 cropped would outperform a K100D + 50-135 at 135mm. I know, you say you may have gone a bit far - but actually, I liked your logic, and really *am* curious now. But anyhow, aside from that, most of the other things you list are also either non-issues or actually issues in favor of the K100D for some people.
For instance, the whole "menu diving" thing is a *total* non-issue for me. There is absolutely nothing in any menu on the K100D that holds the slightest interest to me on a daily basis. I have the camera permanently set on center point focus, center weighted metering, RAW capture, "M" exposure mode, "OK" button to cancel focus in AF mode. This works perfectly for me, and even if you gave me buttons to change any of these settings, I wouldn't use them. Quicker control over ISO, that one I will grant, but not worth spending a grand on.
I've taken about three flash pictures in the last year. More options hold no interest. And I haven't sued continuous shooting mode at all with my DS or K200D (except to test it), nor have I ever exceeded my buffer in real life on either camera. Color/wb not really much of an issue since I shoot RAW, although I admit do appreciate the K200D as an improvement over the DS here. I similarly have little or not interest in automatic bracketing or interval shooting.
As for battery life, I was under the impression the K20D gives around 500 shots per charge, depending on who's doing the measuring - which is to say, pretty much exactly the same as the DS, K100D, or K200D with Eneloops. And this is a whole other religious debate, but you'd have to drag me kicking and screaming back to proprietary batteries - I hate the whole idea of them.
So, I'm not saying the K20D doesn't have some wonderful qualities - of course it does. But that's an awful lot of money to pay for features I personally have little or no use for, especially knowing that the average lifespan of a digital camera is pretty short and I'd probably end up wanting/needing to upgrade again in a few years and the K20D would be worth next to nothing. Whereas a good lens will likely be with me forever.
Now, for someone who *does* like to keep changing his exposure mode, or focus point selection, or shoots JPEG and wants quicker access to relevant settings, or uses flash a lot, etc - then those advantages may seem more compelling. Like I said, it's going to be pretty personal.