Unknown lens mount problem

[astroman]

Hi all,

I have an old Photax 400mm f6.3 lens, and the lens to camera interface appears to be a 47mm internal (female) thread. I purchased a T2 to Canon EOS adapter but this also has a 47mm internal thread i.e. wrong sex.

Does anyone know of a fix for this problem?

Tony

[inkista]

Umm... maybe something like this?

http://www.alpineastro.com/eyepiece_...ed%20Couplings

[astroman]

Thanks Kathy,

Their listing doesn't show exactly what I want but I will contact them and ask if they can help. I am also into astrophotography and I see they carry a selection of very interesting astro related item.

Tony

[JimE]

Re. Pentax Screw Thread
Hi Tony
I think you will find Pentax Screw Thread is M42

Jim

[astroman]

Hi Jim,

Thanks for your input but what I have is a Photax lens not Pentax.

Tony