Someone has tested it on there with the 70-200 mk 2 and didn't see a marked difference over the mm ii converter.
Kerso is already doing the 2x mk3 for £399 George - I expect they will fall even more after a while.Well, as usual there are differing opinions, will be interesting to see how it all shakes down. Bit pricy over here, though, expect they'll drop to around £425 after a bit, but £850 for a couple of teleconverters is still a bit rich, I think.
Thanks, George
Kerso is already doing the 2x mk3 for £399 George - I expect they will fall even more after a while.


No sorry.
Other than those, In the short time I have had it I have only had a play around the house with it on my 70-200 f2.8 IS Mk2 and have been quite impressed by itm both focusing speed and IQ.
I do not have a mkII 2x extender although I do have a mk2 1.4x extender.
Dissapointing thing for me is the MkII 1.4x doesn't fit into the MkIII 2x as it used to in the MKII 2x.
Yep, I heard that. If the 2x mk3 was a step up from the mk2 I was hoping to stack with a 1.4 Mk2. I suppose it would stack with a 12mm extension tube between them though - what do you think?Dissapointing thing for me is the MkII 1.4x doesn't fit into the MkIII 2x as it used to in the MKII 2x.
Yep, I heard that. If the 2x mk3 was a step up from the mk2 I was hoping to stack with a 1.4 Mk2. I suppose it would stack with a 12mm extension tube between them though - what do you think?