canon extenders mk3

dudley46

dudley46

Suspended / Banned
Messages
120
Name
Mark
Edit My Images
No
hi.
i own a canon 100mm-400mm is, i`m thinking of buying a x2 extender mk3 , i was wondering if anyone out there has the same combination and if so how well they work together with regards to auto focus, exposure and image stabilizing.
would this be a wise buy or should i save my money ???.:thinking:
regards chris..
 
Last edited:
wow... Looks like they work....

slow though....
 
mipevo6 said:
wow... Looks like they work....

slow though....
Click to expand...

Your not kidding Martin, f/9.0-11 !
I wouldn't want to try getting birds in flight :lol:
 
manualfocus-g said:
Er, I'm pretty sure the 100-400 IS won't AF with either teleconverter on any body other than a 1 series. And even then, it will only work with the 1.4x model. Happy to stand corrected though :)
Click to expand...

The 1.4x should work on the 7D in Live View as well. Admittedly not the best method for BIF.
 
manualfocus-g said:
Er, I'm pretty sure the 100-400 IS won't AF with either teleconverter on any body other than a 1 series. And even then, it will only work with the 1.4x model. Happy to stand corrected though :)
Click to expand...

I can confirm that my 7D and the 1.4MkIII with the 100/400 = no AF. As far as image quality...... noise, useable at 3200 but not very clean better at 1600 and getting acceptable. While the reach is of great value if you need super clean images or you need to pan/track the subject you may struggle for IQ.
 
DucDuc said:
I can confirm that my 7D and the 1.4MkIII with the 100/400 = no AF. As far as image quality...... noise, useable at 3200 but not very clean better at 1600 and getting acceptable. While the reach is of great value if you need super clean images or you need to pan/track the subject you may struggle for IQ.
Click to expand...

DucDuc, are you shooting in Live View? It's reported the 7D will AF with TC's and this lens, unless it's unique to the III series that it doesn't work.
 
I agree with manualfocus-g as I've used the 1.4MkII extender on the 100-400 which will give you a maximum aperture of f8 at the 400mm end.

This will autofocus (albeit you're down to one focus point) on the 1 series cameras only.
 
Last edited:
or8it said:
DucDuc, are you shooting in Live View? It's reported the 7D will AF with TC's and this lens, unless it's unique to the III series that it doesn't work.
Click to expand...
no I do not use live view. tc & AF works a treat w/70-200 mkII but no AF on 100-400
 
The MkIII extenders are designed to work best on the second generation of super-telephoto lenses. As such, you won't get much of a benefit using a MkIII extender over the MkII one, so you might as well save your money and get the older version.
 
You must log in or register to reply here.
Back
Top