Old TV studio camera lens 15-150mm F2

[Robert_T]

Cleaning out down-stairs I came across this massive zoom lens I acquired some 15 or 20 years ago salvaged from a TV Studio camera. It's big, weighs 2-3 kg and zooms from 15 to 150mm with F2 fully open throughout the zoom range.

Anyone have any thoughts on whether this could be good for astro-work?:shrug:

It's covered in dust, but I'll clean it up and try and work-out where the focal plane should be ... it looks like with a bit of though I could adapt my spare Canon EOS adaptor onto the end but suspect I'd need an extension tube to get focus with the dslr... I don't know how big the film was that this projected onto so not sure how cropped or whatever it would be :shrug:

Still worth a look I think. It's got an over 4 inch objective and if it ran at 150mm and F2 it might do some good stuff. If it really does 15mm it would be wider than my currenty wide-angle. Could look a bit "excessive" though carrying it round with my Canon 40d tacked on one end doing landscape pics:D

[koputai]

Got any pictures of it?
Is it a C-mount?
I have looked in to something similar, a 16-160mm Fujinon TV lens, C-mount, with about a 4 inch apperture. I wanted to use it on a webcam. I emailed Steve Mogg about making an adapter for me, but he says it's not possible.
Below is my email to him, and his reply.

Cheers,
Jason.

____Me to Steve____
Hi Steve,
I'm after a webcam/lens adapter so I can use a webcam mounted to a
C-mount lens. I know you do these adapters for Canon/Minolta etc lenses,
but do you do one for a c-mount lens?
Regards,
Jason.

____Steve to me____
Hi,
Many have asked this question. I would but the problem is that it
doesn't work. The back focus distance on a C-Mount lens is 17mm.
Distance from back of lens to the focus point. This is not enough space
to make the adapter and mount it to the camera. Back focus on and SLR
lens is around 44mmwhich makes it possible.
To do it for a web cam you really have to make a custom case to hold the
webcam board and have a C-Mount on the case.
Steven

[Suzy_A]

Two suggestions...

1) Wait 5 years until cameras with live-view eg Canon 40d or 450d come down in price and then get one and pull the mirror out and stick the lens in.

2) While you're waiting for (1), stick an eyepiece at the end and use it as a superfast, low-mag refractor. Don't worry about the coma or anything like that, just have fun with it. I did this with a lens - drilled a hole through a rear lens cap and glued on a 12 mm eyepiece. Works great!

[jjjnettie]

That was the first thing I thought of too.


[/QUOTE]I have looked in to something similar, a 16-160mm Fujinon TV lens, C-mount, with about a 4 inch apperture. [/QUOTE]
Forget the webcam, mount it on a Gstar.

[Robert_T]

I took and attached some (quite awful) pics to show the lens and mount end... no thread or anything. I don't know what a C mount is.

I did a test with the 40d on live view holding the lens in front. I was able to achieve focus at varying distances of 1-2cm from the front of the bayonet mount and the rear of the lens so an adpator should be possible. That said I don't think it will useful with a DSLR because it was severely vignetted. I'm not sure what film size these cameras fed, but it must have been a lot smaller than a typical DSLR chip size.:sadeyes: