This eternal nagging about High-quality products can be quite annoying. If I want to buy me something, in this case, the Extender EF 2x III, I find out in advance, but not grumble afterwards! Here's a little help: EF 135mm 1: 2L Extender..1,4 + 2 EF 180mm 1: 3.5 ............. 1.4 - EF 200mm 1: 2.8L II ......... 1.4 + 2 EF 300mm 1: 2.8L IS ......... 1.4 + 2 EF 300mm 1: 4L IS ........... 1.4 - EF 400mm 1: 2.8L IS ......... 1.4 + 2 EF 400mm 1: 4 DO IS ........ 1.4 - EF 400mm 1: 5,6L ............ - - EF 500mm 1: 4L IS ............ 1.4 - EF 600mm 1: 4L IS ............ 1.4 - EF 70-200mm 1: 2.8L IS ....... 1.4 2 + EF 70-200mm 1: 2.8 L .......... 1.4 + 2 EF 70-200mm 1: 4L IS ......... 1.4 - EF 70-200mm 1: 4 L ............ 1.4 - EF 100-400mm 1: 4.5-5.6L IS .. - -
Some objective is with the cameras of the series 1D, 1DS, the 5D autom.Scharfstellung possible with the central AF point!
Would be glad if the view has one or the other, and corrects his review.
If someone wants to buy the 2x, easy read at Canon. The 1.4 working on appropriate objective in principle without loss, at 2x the description is a matter of interpretation (This extender increases the focal length of Canon telephoto or telephoto zoom lenses of the L-series by a factor of 2 with optimized AF performance and communication with a suitable camera lens combination).
Both already worked, 1.4 III (the own), and with the 2.0x III (loan) (EF 300 f4.0, EF 180 F3.5 macro, ef100-400mm 4.5-5.6 L IS USM - without AF)
