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04-18-2007, 05:53 PM   #16
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QuoteOriginally posted by Rick Quote
However, I have gained the assumption that SOME digital lenses are labelled with what they are when on a digital camera.
Nope. All lenses are labeled with their honest-to-gosh focal length. The focal length of any given lens gives you a certain amount of field of view on a 35mm film camera, but a smaller field of view on a Pentax DSLR. That's why they call it "equivalent"; the 18mm setting still has a focal length of 18mm, but on the DSLR it will give the same field of view you're used to from a 27mm lens on your film camera. But it's still an 18mm lens!

This is true of every lens. Whatever length it is, you can multiply by 1.5 to get an idea of what 35mm film camera lens the field of view will look like. If you're used to 120 film, or 8x10 field cameras, or whatever, your mental calculation will be different!

So: if 28mm is as wide as you can go with your current glass, you are very rapidly going to want something wider. The results you're going to get on the K10D are going to look like what you're used to from a 42mm lens. That's not even as wide as you get from a cheap point-and-shoot. This may not bother you -- lots of great photographers shot a 50mm lens their whole life -- but you more likely will find yourself wanting wider.

I think you should get the 18-55mm kit lens. It's really cheap, and more than adequate in quality. It will look like 27mm at the wide end to your film-trained eye. And if you break it, you're not out much. After that, you can see what you find yourself wanting. That's when you're going to get into trouble! So many to choose from....

04-18-2007, 08:09 PM   #17
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QuoteQuote:
if it's stopped down just a bit..

I just wouldn't say it's the lowest optical quality available, not by a long shot. Even some of the older Pentax zooms are much worse than this. The 18-55 is generally regarded as one of the better kit lenses out there by most reviewers.
As a preface, I said "about" the lowest optical quality :-)

And, stopped down means an even slower lens.

And, a "better" kit lens is only relative.

Most people replace it at some point, if they even get it to start with.
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