Adorama T-Mount for Canon EOS

I bought this adapter with a Celestron Ultima 80ED so I could use it with my Canon EOS. The adapter is pretty well built and solid and I recommend it 100%. I'm giving 4 starts only because it does not come with instructions. You may say "why this guy needs instructions for something so simple? Is he dumb?". No, I'm not dumb :-) The adapter has some screws and marks that I could not figure out what they do or what they are for. I tried to move them to check what was the difference, but didnt find out.

But its a great piece anyway. I'm sad I'm not going to use for long, because the Celestron scope, on the other hand, is a piece of crap and I'm selling it (coz I'm not in US to return it to Amazon). You may take a look at my review for it.

... you never know what you're gonna get. I order one and it was great (Bower Brand) and promptly ordered another and it was a different brand and literally fell apart in my hands trying to install it. 2nd one was a total piece of junk. Neither were made in Japan like the picture indicated. Buy somewhere were you know what brand you're getting.

I ordered this t-mount thru Amazon. Looking at the picture it said Japan. Ok. When the order arrived it had Taiwan stamped on it!!! No. on the box was #93419 Canon EOS. No red dot, just a small hole drilled in it.

So I was able to figure out how to install it, with out the red mark. I tighten it down but was able to turn it conterclockwise and it unscrewed. The locking pin on the camera will not lock in place. The locking pin works just fine with all my Lens. So the hole on the T-Mount from TAIWAN is not installed correct. I thought this kind of thing was my we stoped buying from TAIWAN. VERY UNHAPPY. Now I have to pay to ship it back. And wait until it comes back. Still want know if it will be right one.

Okay, so I bought these 3 items from Adorama:

(1) Canon XSi Camera.
(2) T-mouont.
(3) ETX Camera Adapter #64.

I was very excited about connecting the Canon XSi camera with my "Meade ETX-90 AT" telescope but the experience with T-mount didn't turn out to be very pleasant.

So here's what happened:

If you look at the T-mount picture carefully, you will find that it's really made of 2 rings. One EXTERNAL ring which attaches to the Camera (like a lens) and then there's an INTERNAL ring which you screw it in the T Adapter. (other side of the T-adapter screws to the telescope ofcourse). That text printed on the ring is actually printed on the internal ring. The internal ring is embedded in the External ring and it almost looks like a single piece (and it's suppose to function like a single piece too).

So, when I tried to screw this T-Mount to the ETX Adapter #64, it just didn't go in smoothly and after couple of twist-n-turns, it just stopped and didn't go in at all even though i could see on the T-Adapter that there's more space available for it to go in.

I was very careful about making sure that I don't screw it wrong but after many tries, I had to apply a little bit of pressure at which the internal ring came off.

Now when I tried to put the internal ring back in the external ring, it became loose. I thought I broke it. I ran to my local Camera shop and the guy over there pointed out the 3 holes on the external ring which are used to tighten the internal ring if it becomes loose. He didn't had that tool to screw it tight so I had to go to another Camera shop to get it tightened.

That guy on the second shop was a professional guy and he not only tightened the internal ring, he actually twisted and turned the T-mount onto the T-Adapter many times (forcefully) and applied some machine oil to make it smooth. He screwed and unscrewed the T-mount on the T-Adapter atleast 8-10 times to make it much smoother and made it go all the way into the T-Adapter.

It was a long ordeal but everything came out well after a lot of leg work.

Now I am able to put all of it together and just took couple of shots from my apartment window. I am still new with this but I am hoping it will all be worthwhile.

This T-mount wasn't of the best quality but it's working now.

First off I must admit that I have only attached this to my camera so far, I have not used it for any photography yet. But so far this adapter seems very well built. It is made out of metal so it has a solid feel about it, and it fits very nicely into the metal mounting of my Canon Rebel XTi. My only complaint, and its a small complaint, is that there is dot to indicate how it fits into the mount on the camera like there is with lenses. It is easy enough to figure it out how it fits after fiddling around with it for a minute or two though.