How does the Canon Extender EF 1.4x III work on the Canon EF 100-400mm lens?

Jess H.
CamerasLenses Expert

Hi! I am a Getty Images artist with photos featured in Click magazine! I own 4 cameras, 9 lenses and love tech talk!

 

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Shopper conversation with Jess H. on July 24, 2016

Jess H.
Hi there!
I see you were looking at the 100-400mm Canon lens?
Great telephoto! What questions do you have on it?
Hi Jess, I just received an email about travel dollars up to $1,000 if I make a purchase by tomorrow. I've been thinking about adding the 100-400 lens and 1.4 extender to my equipment. Am I correct in assuming this combination will work fine on my 5dIII body? Also, what are the limitations on the travel dollars and where can they be used?
Jess H.
Let me just double check on the extender
Just a moment
The 100-400mm is compatible, however
AF will not be possible on it
What types of situations will you be shooting with it?
Wildlife. I thought I heard or read that it would focus up to a certain fstop such as perhaps 5.6 or 8 but not beyond.
Jess H.
Generally you do need a f/2.8 at least,
On the 5DIII AF won't be possible
Okay, I'll pass on the extender. What about the travel dollars? Where can I learn more about the details?
Jess H.
I've not seeing any info on that yet, let me check here
Was the email directly from Adorama?
Yes. It arrived just a few minutes ago. When I opened it says i can receive up to $1,000 in travel dollars if I make a $1,000 purchase by tomorrow.
Jess H.
Hmm, okay.
Unfortunately, I'm not seeing any info on it here on my side. I'd suggest giving customer service a call tomorrow and they'll be able to fill you in on all the details