Are these pentax "screw" mounts?
IIRC, there is a mogg adapter to do this...
http://webcaddy.com.au/astro/ProductList.asp?cat=webcamslr
I dont think there is an issue with focal plane distance, as long as the distance
is reasonable. However, the focus distance marks on the lens will no
longer be accurate.
I did the very thing you are trying to do.
What I did is get a small metal box from one of the electronics stores.
I then cut a hole in the lid, and mounted a pentax "screw" mount t-adapter
to the box using epoxy. On the inside of the lid, I installed a small wooden board to
mount the webcam electronics, and made sure it was level. And painted
it all black. On the bottom of the box I tapped a hole for 1/4-20 thread
for mounting on a tripod.
I used this to do some webcamming with a pentax telephoto lens during the
daytime, and at night for autoguiding.
The mogg adapter would have been way easier, and probably cheaper.
The camera on the left in this photo is the webcam..
http://fototime.com/3A3F33B22305B8B/standard.jpg
jeff
--- Stephen Migol <tac@No-Spam> wrote:
> I'm looking to adapt my new webcam for pentax lenses and was looking at the CLA-7 to
> help me do just this task. If one of the TACOs might have such a device, I was curious
> if the lens-to-ccd distance is fixed for a specified distance or if there is some
> variance available.
>
> Regards,
>
> Stephen
>
Received on Fri Apr 1 13:24:56 2005
