Looking for an adapter to use a Canon Lens as a spotting scope.

[Marty Sedluk]

I have a Canon SLR and numerous lenses. I also have a telescope with numerous eyepieces. I have been browsing the web looking for a spotting scope.

What I would like to do is use one of my expensive Canon lenses for a spotting scope, I know people use spotting scopes for lenses, the results are generally OK, but you do not get auto focus. I would rather spend more money on a great auto focus Canon lens and then use the Canon lens as a scope. I would like an adapter that will allow me to hook up my 1 1/4” eyepieces to my Canon lens, I would use the manual lens focus to focus the image. This way I have fewer things to carry around on my boat which is where I often would use the spotting scope. I already have a Carbon Tripod with an Arca Swiss ball head to mount it on. The bigger Canon lenses already have ring holders that hook up to the ball head. If I could find an adapter I would gain a lot more functionality with minimal expense and minimal weight.

 

[Jude Bryant]

I have one for Canon FD. It was made by Vivitar, and called lens scope converter. Works very well but the eyepiece was perm. I could not change it.

It offered 10x conversion. So my 300mm 2.8 FD lens is now a 30x scope. I use this sometimes when in the field. I have also viewed jupiter with it, no abberation, with good results.

Have not seen one for eos. Hope this helps.

Regards
Jude

I have a Canon SLR and numerous lenses. I also have a telescope
with numerous eyepieces. I have been browsing the web looking for
a spotting scope.

What I would like to do is use one of my expensive Canon lenses for
a spotting scope, I know people use spotting scopes for lenses, the
results are generally OK, but you do not get auto focus. I would
rather spend more money on a great auto focus Canon lens and then
use the Canon lens as a scope. I would like an adapter that will
allow me to hook up my 1 1/4” eyepieces to my Canon lens, I would
use the manual lens focus to focus the image. This way I have
fewer things to carry around on my boat which is where I often
would use the spotting scope. I already have a Carbon Tripod with
an Arca Swiss ball head to mount it on. The bigger Canon lenses
already have ring holders that hook up to the ball head. If I
could find an adapter I would gain a lot more functionality with
minimal expense and minimal weight.

 

[fireshipjohn]

Hi,

Edmund Scientific do a T mount to 1.25" adapter, which together with a common eos to T mount adaptor would fit, whether it would focus correctly, I dont know....

See details here.

http://www.edmundoptics.com/US/onlinecatalog/displayproduct.cfm?productID=1970

John

 

[fireshipjohn]

Sorry typo in the subject line!

Hi,

Edmund Scientific do a T mount to 1.25" adapter, which together
with a common eos to T mount adaptor would fit, whether it would
focus correctly, I dont know....

See details here.

http://www.edmundoptics.com/US/onlinecatalog/displayproduct.cfm?productID=1970

John

 

[Daniella68313]

I beleive that the largest eye piece for telescopes is 40mm? the 50mm 1.8 is 52mm I think.

there are some adapter that basicaly hold the camera in front of the telescope. I am not sure what you mean by using your lens as a spoting scope? it will not have enough magnification for this.

I have a Canon SLR and numerous lenses. I also have a telescope
with numerous eyepieces. I have been browsing the web looking for
a spotting scope.

What I would like to do is use one of my expensive Canon lenses for
a spotting scope, I know people use spotting scopes for lenses, the
results are generally OK, but you do not get auto focus. I would
rather spend more money on a great auto focus Canon lens and then
use the Canon lens as a scope. I would like an adapter that will
allow me to hook up my 1 1/4” eyepieces to my Canon lens, I would
use the manual lens focus to focus the image. This way I have
fewer things to carry around on my boat which is where I often
would use the spotting scope. I already have a Carbon Tripod with
an Arca Swiss ball head to mount it on. The bigger Canon lenses
already have ring holders that hook up to the ball head. If I
could find an adapter I would gain a lot more functionality with
minimal expense and minimal weight.

--
------------------------------------------
this is elfe language from Lord of the ring:
Minë Corma hostië të ilyë ar mordossë nutië të
Mornórëo Nóressë yassë i Fuini caitar.
Un thoron arart’a s’un hith mal’kemen ioke.
Saurulmaiel

Please do not start new thread for private message to me but send them to me via email instead! thanks.

 

[Marty Sedluk]

I have the 70-200 L IS & the 300mm 2.8. Both are EF, thanks for the lead. I have a 7mm Nagler that will get me 42x, I would buy a 3-6mm Nagler zoom if I find an adapter. This would get me a 50x-100x zoom. I currently have a Mewlon 300 scope, this thing has a 3500mm focal length so the 3-6mm might not be all that useful on the scope but I would give it a try.