EF 24-105mm f/4L - Wrong Lens ID reported to camera

[photo_guy5]

Hello,

I believe my lens is reporting "24-105mm" to my 5D mk III instead of the expected "Canon EF 24-105mm f/4L IS USM"

Thus, the in-camera Lens aberration correction is not available.

Also, DPP 4.19.30.0 reports Lens data:  Not Available.

Please note that my 50mm lens works correctly with these features and I successfully used the EOS lens registration utility, etc.  I've downloaded the lens profiles in DPP..  I've done all that.

Yes, this is on a full size RAW file. 

Help?  Anyone seen this before?

[photo_guy5 · Accepted solution]

Took the lens to the local camera shop today and tried a different copy of the same lens.
Other 24-105 lens works correctly.

Lens in question also shows the "24-105mm" lens info on a different camera.

At this point, I'm going to sell the thing & buy a different one.
I think that the possible ribbon/flex cable flakiness is the most plausible answer.  

Thanks for the help!

[p4pictures]

Do you have the EF 24-105mm f/4L IS USM or the more recent EF 24-105mm f/4L IS II USM lens?

What firmware version is in the EOS 5D Mark III camera, version 1.3.6 is the most recent?

[photo_guy5]

Thanks for the reply.  I have the latest firmware on the camera, 1.3.6

The lens is the original, not the "II" version.
Is the DPP Digital Lens Optimizer dependent on having uploaded the data to the camera first?  I thought that would work even without the camera having the lens aberration correction data in it.  

EOS Lens Registration tool shows that the box is checked for both versions of the 24-105 f/4L..

Should the 

[p4pictures]

When you open the raw image in DPP, press CTRL / CMD I to show the info panel, this will show lots of information about the camera settings and also the lens. Does it list there as the EF 24-105mm f/4L IS USM?

I found an old image in my archives with the EOS 5D Mark III and EF 24-105mm f/4L IS USM. If I open in DPP then the information panel shows the full lens info. If your lens is not reporting this then it might be a lens issue.

This is what I see

[photo_guy5]

I agree it's something with the lens..  EXIF info from DPP here:

[deebatman316]

Can you post a sample picture in the forum taken with that lens. Also pictures of the lens itself too. It's odd that it just says 24-105mm but not the whole lens name. All of my Canon lenses old and new show their entire and exact names. Even my old film era EF lenses from the beginning of the EOS line. Their full and exact names are reported in the metadata such as EF 35-70mm F/3.5-4.5, EF 50mm F/1.8 or 70-210mm F/4. If the camera doesn't know the full name of the lens mounted it cannot apply the correct lens correction profiles.

[photo_guy5]

[deebatman316]

I looked at the metadata and it reports "Canon 24-105mm". I had one 3rd Party Sigma lens that I used on the EOS 90D and the camera reported "17-50mm". In the lens correction menu options but the metadata reported the full name of the lens Sigma 17-50mm F/2.8 DC OS HSM. That lens didn't play nicely with the EOS 90D it has AF issues with newer bodies. But it worked fine with my old EOS 40D. How does the lens work on a different camera the supports in camera lens correction. Not all cameras support in camera lens correction such as my old EOS 40D. But I could easily use lens corrections in post even if the camera doesn't support it in camera. 

[photo_guy5]

It's a 5D Mk III and I believe this was the kit lens that was sold with it... 

In the EXIF data, both online readers I used reported this:

[Peter]

Perhaps a broken flex cable.