Sony Digital Camera Forums

Digital Photography Equipment => Other Photography Equipment => Topic started by: subbu68 on February 10, 2012, 12:04:02 PM

Title: Celestron T- Ring
Post by: subbu68 on February 10, 2012, 12:04:02 PM
Along with my A580 got a Celestron T Ring to attach my scope to Alpha cameras. Got it from BH Photo Video. It does not fit any of the cameras I have. I first tried on a NEX adaptor I have so as to not to damage my camera lens mount. No luck. I even tried to put a rear lens cap on it. no way.

On comparing the thickness of T ring's camera mount I found it much thicker than the A mount lenses. It is 3mm plus while lens is only a mm or so. See pics.

(http://farm8.staticflickr.com/7152/6851129253_c072049869_b.jpg)     

(http://farm8.staticflickr.com/7159/6851129401_8ee5aaceeb_b.jpg)

Am I doing something wrong that the T ring does not fit the camera?
Title: Re: Celestron T- Ring
Post by: JimA on February 10, 2012, 12:37:26 PM
there used to be a universal camera mount system called T
you bought a t mount lens then a specifc adaptor for your camera
I suspect thats what you have you then need a si=ony or =minolta T mount adaptor

have a look on e bay

Title: Re: Celestron T- Ring
Post by: subbu68 on February 10, 2012, 02:10:22 PM
Oh.. I forgot to specify that this T ring is marked Minolta Alpha AF on it and Minolta Maxxum / Sony Alpha moutn on BH Photo Video website.
Title: Re: Celestron T- Ring
Post by: harveyzone on February 10, 2012, 02:55:24 PM
I may be being obtuse, but I cannot quite understand what the problem is from your description. The distance you appear to be measuring is not critically important.

What doesn't actually fit? Does it drop in but not turn (I have an M42 adapter that is tight to turn). Does it not push in at all when you line up the lens mount markers? Have you tried directly comparing it to a lens mount to ensure that the flanges line up correctly?

Title: Re: Celestron T- Ring
Post by: subbu68 on February 10, 2012, 03:20:57 PM
I may be being obtuse, but I cannot quite understand what the problem is from your description. The distance you appear to be measuring is not critically important.

What doesn't actually fit? Does it drop in but not turn (I have an M42 adapter that is tight to turn). Does it not push in at all when you line up the lens mount markers? Have you tried directly comparing it to a lens mount to ensure that the flanges line up correctly?

It does not go in at all. If you looked in the camera there is a black little protrusion next to the lens mount marker going clockwise to stop the aperture lever. That seems block the T ring from going in. The lens rim being thin it goes in between this little black block and camera mount edge.
Title: Re: Celestron T- Ring
Post by: harveyzone on February 10, 2012, 05:27:29 PM
Ah - I understand your measurement images now! I have just had a look at some M42/T adapters that I have got and the thickens at that point is possibly half a mm. Nowhere near as thick as the one you have shown. One of mine is a little thicker, perhaps 2-3mm, but it has a section cut out to be thinner by the locating locating mark to accommodate the lever.

Looks like the adapter is faulty or marked for the wrong mount.
Title: Re: Celestron T- Ring
Post by: Jumeirah on February 11, 2012, 09:55:00 AM
Did you try an exchange or refund from BHphoto?
Title: Re: Celestron T- Ring
Post by: subbu68 on February 11, 2012, 02:20:31 PM
Await BH Photo reply.