100-400mm f/4.5-5.6L IS II with EF 1.4x III incompatibility

Started 3 months ago | Questions thread
AnthonyL Veteran Member • Posts: 3,563
Re: 100-400mm f/4.5-5.6L IS II with EF 1.4x III incompatibility

NikonHaoleboy wrote:

arijuki wrote:

NikonHaoleboy wrote:

Thanks Abbott, I have the 100-400mm f/4.5-5.6L IS II which is an EF L lens. I use Canon 6D and SL1 cameras, I have cleaned the contacts on lens, converter and both cameras to no avail.

It is about camera (6d), not lens + extender combination. See e.g. https://www.dpreview.com/forums/thread/3787861

I had the same issue when I tried that combination on my 700D. Strangely the Kenko Teleplus HD 1.4x DGX for Canon EOS EF/EF-s works on ALL my Canon lenses. However this is not a recommendation as I'm not overly impressed with the speed/ease of focussing nor the final image results.

EF 1.4x III is the best of Canon's converter series, but still has negative impact on IQ, especially with zoom lenses.

It only auto-focusses with higher end cameras which excludes my 700D.  That ruled it out for me after trying it so I returned it for the Kenko.

 AnthonyL's gear list:AnthonyL's gear list
Canon EOS 700D Canon EF-S 10-22mm F3.5-4.5 USM Canon EF-S 55-250mm f/4-5.6 IS Canon EF 40mm f/2.8 STM Canon EF-S 18-55mm f/3.5-5.6 IS STM +5 more
Post (hide subjects) Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow