90D Problem

[steinr98]

YEs I know Canondoes not reconize third party lenses- However please read thru this-  I have a Tamron 18-400 lens that is 5 months old.  This lens worked perfectly for the 5 months. NO wthe lens willnot focus at 200mm or above.  I sent intheLens to 

tamro- they retued in working ordere.  no mention of a problem.  Still des not work above 200mm.  There are countless( and I mean lots of 90D owners on Facebook that use this lens-  Now comes the real problem- This lens works fine on 4 different Canon bodies!! 7D MKII, 5Ti, 5D, another 90D( a friend).  My 90 D works with 8 Canon Lens + another Tamron,a Tokina, and a samyang lens.  I sent the body in for repairs to the tune of over #300 buck as it was out of warranty- It came backthe same way???  I don't think tey did anything to it as it worked with all Canon lenses??

Any one have any ideas what to try ??. It is a great walk around lens I can use it on my 7D MKII but the 90 D is much lighter and so I liket o use it on the  90D.

Thanks!

[steinr98]

Will give this a try- Thanks !Lens works on 4 or 5 different Canon Cameras.

Note: This lens worked perfectly fne for 4 months!!!  Tha tis wha tis frustrating!

[steinr98]

The camera was sent into the Canon warrant department.  The lens workewd perfectly for 4 months.

The lens was sent in to Tamron and returned under warranty-  Go figure!!

[steinr98]

Thanks!  The lens was returned to Tamron under warranty- so it shoiuld be up to date.  This is the only Tasmron lens I have - Had the 150-600 but sold it and purchased the Canon 100-400- It is sharper in my book!  I d do have 1 Sigma lens, 8-12 WA- super lens!!

[steinr98]

Thanks all- Am still working on it!  I just sent the camera back to Canon with a full data sheet!!  We shall see- I have been using this lnes on my 7D MKII!.  This lens is super sharp asnd love it as a walk around lens!  I ahve cropped and then printed to 13 X 19 with out lousing any detail!

[Waddizzle]

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@ebiggs1 wrote:

""OP stated: " This lens works fine on 4 different Canon bodies!! 7D MKII, 5Ti, 5D, another 90D( a friend)." 

"Then I would compare the firmware revisions in the two cameras."

If it went to a honest to gosh real Canon service center they most likely did a reset and a FW upgrade. Not too hard to check though. Canon is pretty through when they service a camera even beyond the complaint. If they said the 90D is good to go, it is not the 90D.

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???   What does one camera going to the service center have to do with the firmware version in a second that did not go to the service center?  ???

[ebiggs1]

Perhaps nothing but Canon did not update their FW so a Tamron lens will work. So, it is really a moot point, isn't it?

[ebiggs1]

"This is the only Tasmron lens I have - Had the 150-600 but sold it and purchased the Canon 100-400- It is sharper in my book!"

You must have gotten one rotten 150-600mm Tamron super zoom. You apparently don't have the best lens buying luck!

[steinr98]

I tried a few things that were suggested- I have sent the body into Canon for repairs!!  I will let them figure it out!!

Thanks all!  Appreciate the help!

Ron

[Waddizzle]

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@steinr98 wrote:

I tried a few things that were suggested- I have sent the body into Canon for repairs!!  I will let them figure it out!!

Thanks all!  Appreciate the help!

Ron

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I already told you what they will most likely find.

"You don't have a 90D camera problem.  You have a Tamron lens problem."

Canon is under no obligation to ensure the camera works with a third party lens.  If the lens worked with a 7D2, then that means Tamron got lucky and got something right.  If the lens does not work with a 90D, then Tamron has some more reverse engineering homework to do.

Good Luck.  

[steinr98]

As I earlier This lens works on another 90D plus 4 other Canon cameras- Thelens was sent in first to TAmron to be serviced.  We shall see what Canon comes up with.

Thanks

Ron