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Tamron 02F teleview eyepiece adapter Review RSS Feed

Tamron 02F teleview eyepiece adapter

Handling 
 8.0
Value 
 9.0
Reviews Views Date of last review
1 3,534 Wed July 25, 2018
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Recommended By Average Price Average User Rating
100% of reviewers $120.00 9.00
Tamron 02F teleview eyepiece adapter

Tamron 02F teleview eyepiece adapter
supersize
Tamron 02F teleview eyepiece adapter
supersize
Tamron 02F teleview eyepiece adapter
supersize
Tamron 02F teleview eyepiece adapter
supersize

Description:
This eyepiece adapter fits directly to the adaptall lens. It has diopter correction +4 to -4 and a wide field of view. Fits pretty much all the adaptall lenses. Magnification is given by dividing the focal length by 20.

5 elements in 3 groups, prism.
49mm filter thread (pic 2) - or use adaptall mount cap.
1/4" UNC tripod/QR plate thread.
Lanyard/strap attach points.

PDF of orginal user manual here.

Pic of 02F on a 55BB 500mm f8 used with an opticron digiscoping adapter here.
Mount Type: Third-party (adapter required)



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Registered: November, 2012
Location: North Wales
Posts: 2,325
Lens Review Date: July 25, 2018 I can recommend this lens: Yes | Price: $120.00 | Rating: 9 

 
Pros: IQ, versatility, specs
Cons: 45 prism would have been better for general use, not many around.
Handling: 8    Value: 9   

There are but a few eyepiece adapters on the s/h market, mainly the generic japanese made ones that give focal length/10 magnification. This is far superior to those.

I have mainly been using mine on my 500mm mirror and my 300mm f2.8. Taking the eyepiece adapter means I have spotting scope magnification to back up my binocs with only the need to carry this relatively small item extra. Because the magnification factor with this is the focal length divided by 20 ie 25x with the mirror or 15x with the 300mm, it pays to also have a TC along to to boost the mag. I invariably have the 014F 1.4x on the 300mm anyway, giving 21x. The mirror lens + eyepiece combo is a super-convenient "in your (large) pocket" compact scope.

The images by eye are excellent, fully comparable in resolution to my Opticron HR66 scope. In terms of fringing the eyepiece adapter + either of the lenses mentioned is better (no LD glass in my old model scope), and the 300mm with its 104mm objective knocks the socks off the HR66 in low light. Exit pupil is wide and the eye relief is generous, unlike those generic eyepieces I mentioned. And there is a built in diopter adjust, though with the lens focus you only need that for infinity focus. But it does make a useful fine focus/quick adjust as well.
So far so excellent, but if I have a gripe it is the 90 prism these have. Perfect for moon gazing, not so good for general use. With my 300mm f2.8 it is easy to rotate the lens + eyepiece 90 in its tripod ring, and look in from the side, the image is still erect and laterally correct. But it takes a bit of getting used to and sighting on to your subject is a hassle, it's all less natural than sighting along a scope and then putting eye to eyepiece.

I also did a few tests using the adapter with my camera - eyepiece projection digiscoping (pic link above). Results were pretty comparable to using the 01F 2x tc, slightly higher magnification.

Limited of course to adaptall lenses, though it's worth bearing in mind the 49mm thread on the mount facilitates adapting to scopes etc as well (see Steen Brun's pdf of an original manual - link above). I think attempting to put this on other lenses would be problematic because this is designed to get infinity focus with the registration distance of the bare adaptall mount ie ~ 50mm, so add in adapting rings etc. and you are likely to be well short of infinity focus. Though it might be worth chopping up an old K mount TC to get the female K-mount ring to try....

Strong recomendation if you use adaptall long lenses. But the trick is finding one!
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