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02-23-2010, 08:09 PM   #1
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How do you know what Lense fits what camera?

Hello, I have recently bought a Pentax SLR K-X camera and it came with a 18-55.... I am looking at getting a new lens possibly up to the 200-300 range and I am unsure what type of lens fits my particular camera. Is there a quick reference sheet to identify this? Any help would be appreciated!

Thanks!

02-23-2010, 08:40 PM   #2
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In most simplistic terms, what lenses fit what camera depends on the mount.

Each lens, regardless of the manufacturer (Pentax, Tamron, Sigma, Tokina, etc.) or focal length (100mm, 200mm, 100-300mm, etc.), supports only one specific mount. If a lens says its Pentax or K-mount, then it will fit your K-X.

Of course, then there are adapters and what not to mount lenses to cameras other than those originally intended but just stick to lenses that are advertised as Pentax or K-mount, and you'll be fine.

For now.
02-23-2010, 08:42 PM   #3
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QuoteOriginally posted by mjlatnc Quote
Hello, I have recently bought a Pentax SLR K-X camera and it came with a 18-55.... I am looking at getting a new lens possibly up to the 200-300 range and I am unsure what type of lens fits my particular camera. Is there a quick reference sheet to identify this? Any help would be appreciated!

Thanks!
This may help.. If it's a pentax K mount type, it'll fit (even in 3rd party lenses like sigma, tamron, etc).

02-24-2010, 03:34 PM   #4
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Any lens that says it's for Pentax but doesn't say "screwmount" or M42 is K-mount, meaning it fits. Of course, only lenses that say they support autofocus wil autofocus, and of the manual focus lenses, only the ones that say they support autoexposure will support that.

02-24-2010, 04:04 PM   #5
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QuoteOriginally posted by Marc Sabatella Quote
Any lens that says it's for Pentax but doesn't say "screwmount" or M42 is K-mount, meaning it fits. Of course, only lenses that say they support autofocus wil autofocus, and of the manual focus lenses, only the ones that say they support autoexposure will support that.
I'm a new member, and a pretty new K20D user of six months, and really enjoy this forum.

I also was confused about the term "bayonet" mount, which I think means all K mounts, is that correct?
02-24-2010, 06:07 PM   #6
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QuoteOriginally posted by Penmacgal Quote
I'm a new member, and a pretty new K20D user of six months, and really enjoy this forum.

I also was confused about the term "bayonet" mount, which I think means all K mounts, is that correct?
Yep...K-mount = bayonet for Pentax cameras

Steve
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