Please help me figure out which lens to get.

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Eric R Snow - 28 Oct 2004 18:05 GMT

I have a Pentax digital camera with 3 times optical zoom. It's not
enough. I would like to double this at maximum zoom. The cameral lens
makers I've contacted don't make the lens I want and won't tell me how
to pick out a lens which can have the mount modified to fit the
camera. I have a machine shop so making any knid of lens holder will
be easy for me. But how do I find out what kind of lens to look for?
What do I need to know about the Pentax camera lens to try to find a
lens that can be adapted?
Thanks for any help.
Eric R Snow,
E T Precision Machine

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jeff - 28 Oct 2004 19:37 GMT

> I have a Pentax digital camera with 3 times optical zoom. It's not
> enough. I would like to double this at maximum zoom. The cameral lens
[quoted text clipped - 7 lines]
> Eric R Snow,
> E T Precision Machine

Tiffen (and others) make supplemental telephoto lenses. Go to a good camera
store to find the thread size of your camera.
http://www.bhphotovideo.com/bnh/controller/home?A=search&Q=&b=363&shs=&ci=8464&a
c=&Submit.x=17&Submit.y=11

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jeff

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Eric R Snow - 28 Oct 2004 19:58 GMT

>> I have a Pentax digital camera with 3 times optical zoom. It's not
>> enough. I would like to double this at maximum zoom. The cameral lens
[quoted text clipped - 11 lines]
>store to find the thread size of your camera.
>http://www.bhphotovideo.com/bnh/controller/home?A=search&Q=&b=363&shs=&ci=8464&a
c=&Submit.x=17&Submit.y=11

Thanks Jeff, I already contacted Tiffen. My first choice actually. My
camera has no threads on it around the lens. I will probably build
some sort of lens holder which uses the 1/4-20 tripod mount thread to
hold a bracket to hold the lens.
ERS

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Charles - 28 Oct 2004 20:23 GMT

>I have a Pentax digital camera with 3 times optical zoom. It's not
>enough. I would like to double this at maximum zoom. The cameral lens
[quoted text clipped - 7 lines]
>Eric R Snow,
>E T Precision Machine

Try posting the question in rec.photo,digital, if you haven't already.
Mention the particular Pentax model as well, you'll probably get some
suggestions.

Someone I know has a Sony digital that does not have threads on the
lens, but there is an adapter that mounts onto the body, makes sort of
a tunnel over the existing lens and the accessory telephoto lens
affixes to the front of that

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- Charles
-
-does not play well with others

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Eric R Snow - 28 Oct 2004 23:50 GMT

>>I have a Pentax digital camera with 3 times optical zoom. It's not
>>enough. I would like to double this at maximum zoom. The cameral lens
[quoted text clipped - 16 lines]
>a tunnel over the existing lens and the accessory telephoto lens
>affixes to the front of that

Thank You Charles. I'll do justbthat.
ERS

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Natural Science Forum / Physics / Optics / October 2004

Please help me figure out which lens to get.