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]

Yeah, I was thinking that too..  Bummer.

Interesting that it still communicates other relevant data to the camera though.

[Peter]

What if you unmount and mount the lens at different focal lengths?

[photo_guy5]

Interesting idea.  

I mounted the lens at 105mm with the barrel fully extended and took two photos at different focal lengths using remote shooting in DPP.

They both correctly identify the focal length - but the lens is still shown as "24-105mm"

[photo_guy5]

This forum is confusing in the order of replies.. 
My copy of the lens showed "24-105mm" on a different camera today.
The other copy of the lens showed the correct "EF 24-105mm f/4L IS USM" on my camera.

😕

[Peter]

You can change the order in the settings. I did for desktop use.

Glad you found out that the lens is the problem and not the camera.

[photo_guy5]

Also, I have cleaned the contacts with a q-tip and 70% isopropyl alcohol.  I don't think that's it - they appear gold and shiny.

[deebatman316]

Some EF lenses have lens correction profiles already loaded on them. This is the case with newer EF lenses released in and after 2012. Some very old EF lenses also have them already loaded on there. This is the case with older L series lenses. My old EF 85mm F/1.8 USM lens. Purchased new back from the 90s and has lens correction data present. Without me having to load it on the camera or through DPP. There is only one EF L series lens that doesn’t have lens correction data available. That lens is the EF 100-300mm F/5.6L lens. It’s also the first EF L lens for the new EOS system in 1987. It’s also 1 of 3 the L lenses not to use a USM AF motor. It uses the original EOS AF motor called Arc Form Drive. The AF is very slow and these lenses have a 3-4 fps limit when the camera is set to AI Servo/ Servo AF mode.