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| p.1 #4 · which extender/convertor with Canon EF200 2.8 II |
Well shut my mouth! You're right Alan.
I just checked the EF Museum and the 1.4x II does have different optics than the Mk I. In the "block diagrams", you can see the Mk II has a curved front element, while the Mk I looks flat. Also, the Mk II description is a dead giveaway:
" ...The revamped optical systems employed in the new extenders realize even higher image quality than the previous Canon Extender EF1.4X and Extender EF2X models.."
So, back to the original recommendation; if you decide to get a 1.4x to start, then Alan's (Monito) recommendation of a EF 1.4x Extender Mk II is probably the best start. If you ever want to add a second 1.4x TC, then you'll have to pick up a "generic", as you can't stack Canon 1.4x Extenders.
IMO, the Kenko DG/DGX is the best "generic". This view is shared with many other posters in past FM threads. IQ with the Kenko DG 1.4x is virtually idential to the Canon 1.4x Mk I. I'm pretty sure that I posted some comparisons here, a few years ago. I now have Mk III versions of both Canon Extenders, and still use the Kenko DG. AFAIK, the DG and contemporary DGX are the same, except for new coatings on the 'X'. The DG is noticeably better than the Tamron SP AF 1.4x (7-element) TC.
Edited on Jan 22, 2013 at 02:29 PM · View previous versions