Tamron lenses won't work with rebel xti

I just bought my digital rebel xti.. and own a 10D. I also have a Tamron 18-200mm f/3.5-6.3 XR Di-II .. it does not work on my rebel xti.. error 99 communication error..

does anyone know if this lens has reported problems with the xti ? My sigma and canon lenses I have for the 10d work on the xti.. all is fine except the tamron..

thanks

By any chance, does the Tamron have dirty lens contacts?

Yeah, error 99 has something to do with the contacts.

jj1987 wrote in post #2125425
Yeah, error 99 has something to do with the contacts.

I'll check but I use the lens on my 10d, no problems..

jj1987 wrote in post #2125425
Yeah, error 99 has something to do with the contacts.

I'm fairly certain that error 99 is a catch-all code for anything not covered by the other codes.

tsaraleksi wrote in post #2125662
I'm fairly certain that error 99 is a catch-all code for anything not covered by the other codes.

I second that!
Error 99 is when they know nothing else to tell you..

Yep Error 99 means "I don't know what's wrong, so I'm going to stop working" It is a general 'system error'.
I believe Error 01 is a lens communication problem.

But, error 99 could be a lens error but the camera just doesn't know exactly whats wrong.

I too have this problem. I have a Sigma 70-300 lens and the the 'error 99' message when I put it on. This really sucks as the lens compatability was a major factor in my buying this camera. Does anyone have a contact at Canon that can explain this issue to us?

Contact the Tamron service department.

When will you all learn...
Aftermarket lenses are just that!
They are made cheaply by companies who spend very little in R&D and a vast sums on advertising.
And they are stockesd by retailers because the companies, or their distributors, offer enormous profit margins compared to OE lenses.
And they are reviewed in magazines in who's pages you will see very expensive full page adverts for that very same product.
Well fancy that!
Yup - an old cynic (?) but I am also a retailer who knows how it all works
Happy snapping

dorsetpete wrote in post #2331282
When will you all learn...
Aftermarket lenses are just that!
They are made cheaply by companies who spend very little in R&D and a vast sums on advertising.
And they are stockesd by retailers because the companies, or their distributors, offer enormous profit margins compared to OE lenses.
And they are reviewed in magazines in who's pages you will see very expensive full page adverts for that very same product.
Well fancy that!
Yup - an old cynic (?) but I am also a retailer who knows how it all works
Happy snapping

Wow, that's harsh.

But very often true... I don't know if Canon is going to help you any. They deal in Canon gear and the camera is working correctly with a Canon lens, correct? Check the manufacturer of the lens. I have a Tamron 28-75 f2.8 and it works fine with both the 300D and the 20D.

dorsetpete wrote in post #2331282
When will you all learn...
Aftermarket lenses are just that!
They are made cheaply by companies who spend very little in R&D and a vast sums on advertising.
And they are stockesd by retailers because the companies, or their distributors, offer enormous profit margins compared to OE lenses.
And they are reviewed in magazines in who's pages you will see very expensive full page adverts for that very same product.
Well fancy that!
Yup - an old cynic (?) but I am also a retailer who knows how it all works
Happy snapping

riiiighhht.......

You know Iv never seen Sigma or Tamron advertised, anywhere. Thier lenses are also kept at the bottom of the display cases here, and all the sales staff in any of the 2 big local shops will push any Canon lens over a sigma, even if its inferior.
Of course Canon never ever does any advertising in magazines next to excellent reviews of its products, and we all know thier margins are really, really low. Infact they only sell lenses at cost price out of thier own good will.

I don't know what sort of retail your in, but I doubt it has anything to do with photography.



jimwong I remember reading some threads in here a few years back when the 20D first came out.
Apprently Canon is very tight with thier patents, and the workings of the whole EOS system. They often engineer things so they are only backwards compatiable with thier own products.
Companys like Sigma and Tamron have to reverse engineer the EOS system in order to build lenses for it.
It means they are not always able to get it exactly right, and sometimes a lens that works with a 10D, or 20D, will not work with a 30D or 350D because Canon changed a few things.

Check with Tamron, and they offer a firmware update for the lens that will solve your problems
Simga did for a lot of thier lenses when the 20D first came out, and in some cases I beleive even did it for free.

Generally, all lenses that work with the 10D should work with the rebel xti, I'd make sure that the lens contacts are clean on the camera and the lens and restart the thing and see if that does anything.

Titus213 wrote in post #2331326
Wow, that's harsh.

But very often true... I don't know if Canon is going to help you any. They deal in Canon gear and the camera is working correctly with a Canon lens, correct? Check the manufacturer of the lens. I have a Tamron 28-75 f2.8 and it works fine with both the 300D and the 20D.

Is that harsh or true?

I suspect the latter.

If you put aftermarket equipment on your vehicle, it often will affect the warranty. Wonder if that applies to cameras?

here in the states, it only affects warranty if it can be proven to cause the problem. if you put a different suspension on and your motor blows up, your covered under warranty...but thats off topic. im curious as to what caused the problem, as i too have an xti