First of all, rest assured. You won't regret buying any of these. All are going to last long enough. Now:.
1. As regards to Kit lens, All have similar quality. i.e. don't expect much from Kit-lens..
2. What are the USPs of DSLRs? a) Low noise. b) Higher Dynamic Range. E510 falls short of others on these parameters. So eliminated..
3. If you prefer shooting Raw than all (3 in your list) will have similar output. So K10D will provide additional value due to weather seals and shake-reduction..
4. Shake-reduction is tremendous value as I.S. lenses cost double the non-I.S. one of same quality. It is akin to having cheap tripod attached all the time. So valuable during morning & evening landscapes in particular.5.
6. All have enough practical lens choices available. (I suppose you are not a lens collector .
Until this point I've used a Canon A700 But I want more from my camera.
Having real problems deciding on which DSLR to buy. I thought that Ihad it down to 3.
Canon EOS-30dPentax K10DNikon D80.
But I've recently read abot the Olympus Evolt E-510 as well!.
I've decided on the above as models like the Canon 400d Nikon D40xare just too small for my hands!.
The Canon is definitely the most comfortable in my hands and alongwith the Nikon there are lots of lenses, accessories and second handpossibilities - have found a mint 30D for 436 and D80 for 449.
The Pentax and the Olympus however seem better value for money..
On top of this I have read many conflicting opinions about kit lenses..
Best Wishes, Ajayhttp://picasaweb.google.com/ajay0612..
Sony A100 and newer Sony A700 are great cameras based on Minolta. This cameras are compatible with 94 different older Minolta AF lenses including fast primes, Sigma and Tamron lenses built for Minolta Maxxum mount (Dynax) and with news Sony AF lenses. These cameras have camera body based IS..
Sony A700 may feel very well in your hands since it's not small camera. It has titanium body, weather seal and very fast and accurate focus. (I was very impressed by A700 while testing it in store)..
Everyone who answers your post will have a different 'best' camera for you. Only you can make the final decision, but the good thing is that today's (or even yesterday's, really) cams are all very good and you won't regret buying any of them. Get the one that feels the most comfortable to you and start with the kit lenses. Go slowly, and let your skills outgrow the lenses, not the other way around. Your wallet and significant other will thank you for that..
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Buying into SLR is about buying into lenses, not camera bodies...
I have decided against the Olympus and I have visited my local camera shop again today, this ruled out the Nikon - I don't know why but it just doesn't feel right. so I am left with the Pentax that looks great value on paper and the older Canon. From what I've read I am leaning towards the Canon. I have no specific needs at the moment. I live in the countryside so I take more pictures of scenery, flora and fauna but that doesn't mean I don't take pictures of all sorts of things..
There is a second hand 30D body in the shop. If I buy this could you recommend a good alternative to the kit lens an 18mm(ish) what ever mm..