For information's sake (which the OP is obviously looking for),
that is incorrect. There's more disadvantages to the FZ50 from a
DSLR than just noise (no OVF, much less DR, decreased battery life,
worse AF, lens interchangability, better flash systems, stuck at
deep DOF, poor burst mode, among others). Not to say the FZ50 isn't
a great camera, but it's pointless to respond to a person looking
for information without pointing out all the facts.
Cant wait for the "you need a $2000 lens to equal the pannie leica
one" argument to spring up as it always does! lol
Maybe 'cause it's TRUE? (
grin )
Remember, MrXpress ALSO wrote in his first reply that the FZ50 will be sharper than the K100D with a consumer-grade lens.
Just making sure ALL the facts are EQUALLY represented... I think MrXpress did a great job of summing up the pros and cons.
It's a real judgement call, but if the OP is not too experienced in photography, I would lean ever so slightly to the FZ50, or maybe even the FZ30, since it costs about $150 less.
To the OP: You really won't find a one-lens approach in the DSLR, at least, not without sacrificing a LOT of quality. There really is no such thing as a decent 36-420mm lens for a DSLR; the 28-300 consumer lenses like thos by Tamron and Sigma (42-450mm equiv) will not produce anything near as good as the Leica on the FZ30/FZ50.
So, some questions to ask yourself:
1. Do you shoot mostly in one range, or are your frequently "all over the map" in zoom? If the latter, you will be changing lenses often. If that will be annoying to you, or make you miss shots, consider it an important factor. If you mostly shoot in a range where you can get one DLSR lens to cover 90% of your needs, and you won't change lenses often, it will not be as much of a factor.
2. AF speed. The K100D is faster than the cheapest Pentax DSLRs, but it is no speed demon; the Nikon and Canon are both faster. But how much faster? And are any of them so much faster than an FZ30/FZ50 that it will cause you to miss shots, or will be an annoyance? Only the OP can answer that question. I suggest trying them out and seeing how they feel/perform for you.
As an editorial note, I personally think that the AF speed difference in these digicams is neligible for most new users, or even most casual users. Frankly, after dealing with the slow AF speed on my FZ20, I was THRILLED at the AF speed of the FZ30 when I tried it in the store!
One other point: AF-assist lamp. The FZ30/FZ50 have it, all Nikon DSLRs have it, the Pentax K100D does not (I think; I'm pretty sure, but someone correct me if I'm wrong. I know the DL does not have it.) As a result, in lower light the FZ30 may actually AF FASTER than the K100D.
I have a Tamron 70-300mm for my Pentax DL, and I think, at the long end, it's no faster in AF than the FZ30; it also "hunts" more.
So, we cannot automatically say "DSLR AF is faster!" It's not al;ways true, and when it is, the difference may be negligible. That's definitely a "try it yourself" thing.
3. Battery life: The Pentax uses AA batteries, and gives good life, about 300 to 500 pics, depending on how powerful your batteries are. I upgraded from 1800 mAH to 2500 mAH when I bought my DL - the 1800 mAH did not last very long in the DL. Also, although AA are easily found "in a pinch," alkaline AAs will give you 50 shots, then die - so they really are for emergencies, only.
Another usability point: Chaning four AA batteries is a PITA after you get used to the quick-change of a single battery. I used to be all for AA because they were cheap, you could get them anywhere, etc. But I bought two extra batteries for $25 on eBay, so the cost difference is neglible. And a single battery weighs less. And it's MUCH easier to pop in/pop out. Again, it's a usability issue; each person has to decide what works best for him/her. I would MUCH prefer a single battery, and with the new K10D it appears Pentax is going that direction. But the K100D uses AA - good or bad? You decide.
4. Flash systems. I don't know this is an issue, ubnless truly TTL-dedicated flash is a big deal to you. Both have hot-shoes, both take standard flashes, many people are happy with "auto-ness" of the thyristor approach. Not all, true. But, if you go with a dedicated flash, that adds at least another $150 to the DSLR cost. I'm perfectly happy with my Vivitar 285 and Sunpak 433D; I usd them on my Nikon, I use them on my FZ, I use them on my Pentax.
(to be continued)