Is this a K-mount? (Tokina 500mm F8 mirror lens)

[de Haan]

I just bought this Tokina 500mm F8 mirror lens. The seller wrote that it had a Minolta SR mount, but it obviously does not. Am I right that this is a K-mount lens?

Thank you!

 

[Benoz]

It doesn't look like a K-mount.

This one is...

--
Ben.
C&C are welcome.

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[J-E Hukanhauta]

Looks like Contax/Yashica mount.

 

[de Haan]

I think you're right. Maybe that's why it says C/CX on the mount. Time for adapter hunting Thank you!

 

[LDBOK]

Even if you could find such an adapter, the added flange distance would not allow it to focus to infinity and it could only be used at relatively close distances.

Edit: I just discovered there is a FotodioX adapter which includes a glass element and will allow the lens to focus to infinity. I don't know anything about the quality of this adapter, but judging by the price, wouldn't expect it to be very good.

 

[Paul D Noble]

I think you're right. Maybe that's why it says C/CX on the mount. Time for adapter hunting Thank you!

Many of those relatively inexpensive 500mm mirror lenses have T-mounts. Can you unscrew the lens mount from the main body of the lens?

If you can unscrew the lens mount to reveal a 42mm x .75mm pitch thread, just go to ebay and search for a Pentax t-mount adapter. There are two varieties: one for k-mount lenses and one for M42 screw-mount cameras, such as the old Spotmatic.

The t-mount system was invented (by Tamron, I believe), as a way to standardize lens mounts. All t-mount lenses require an adapter. There are no cameras that take t-mount lenses natively.

Here is an example: http://www.ebay.com/itm/JJC-LMA-Met...586279?hash=item33bba68be7:g:8aQAAOSwqfNXjd~q

 

[LDBOK]

I think you're right. Maybe that's why it says C/CX on the mount. Time for adapter hunting Thank you!

Many of those relatively inexpensive 500mm mirror lenses have T-mounts. Can you unscrew the lens mount from the main body of the lens?

If you can unscrew the lens mount to reveal a 42mm x .75mm pitch thread, just go to ebay and search for a Pentax t-mount adapter. There are two varieties: one for k-mount lenses and one for M42 screw-mount cameras, such as the old Spotmatic.

The t-mount system was invented (by Tamron, I believe), as a way to standardize lens mounts. All t-mount lenses require an adapter. There are no cameras that take t-mount lenses natively.

Here is an example: http://www.ebay.com/itm/JJC-LMA-Met...586279?hash=item33bba68be7:g:8aQAAOSwqfNXjd~q

Could very well be a T-mount. Don't know why I didn't think of that.

 

[miles green]

i thought it might be a Contax mount too, because of the CX.

But the contax DSLR mount is called CY mount (contax-yashica) and it looks different. You've got to do some more research i think... Sorry.

 

[Andrew Kay]

I think CX is a Nikon mount

 

[steephill]

The square notch on the bayonet lug beside the C/CX is characteristic of the Contax/Yashica bayonet mount.

 

[Skip py]

It seems indeed to be the Yashica mount : you can find C/CX or CY depending on the lens or adapter

Not easy to convert to PK mount : you can see the differences in this old thread !

Is the Contax and/or Yashica mount the same as the Pentax mount?

Is the Contax and/or Yashica mount the same as the Pentax mount? I think the Contax and/or Yashica mounts are screw mounts like the M42, but I wasn't sure. I guess waht I want to know is: Can one use Contax and/or Yashica lenses on the ist DL? Thanks, --Greg

www.dpreview.com

You should use it first with a cheap but decent converter on a Canon FF body for example to check the IQ and if it deserves such hassle to make it compatible to PK or M42

From this page, it seems that the register distance should be ok if you could replace the CY by a PK or M42 mount ? But have a look at the diameters : 48/44/42mm ...

Camera Mounts Sorted by Register

If you like to play with a dremel ... you may also have a look on the other forum ?

http://www.pentaxforums.com/forums/58-troubleshooting-beginner-help/188264-help-contax-yashica-mount-cy-lens-pentax-k.html

Good luck whatever the way you choose !

Regards, Fred

PS: The new Nikon CX mount is really smaller

Nikon CX format - Wikipedia

en.wikipedia.org