I found that the original Canon LP-6 with the correct packaging etc purchased on eBay is a fake, but it still works fine - one unexpected good use of the update!
I tried the 70-200mm f/4 L IS with the Canon 2x TC III. The focussing was fine but the quality is not as good as the 100-400mm at 400mm.
« Last Edit: April 30, 2013, 01:58:24 PM by AlanF »
5DS R, 7D II, EOS-M, Powershot G3 X, 300/2.8 II, 1.4xTC III, 2xTC III, EF 1.8 STM, EF 70-200/4 IS, EF 24-105, 15-85, 100-400 II, Sigma 10-20, Sigma 150-600mm C, EOS-M 18-55, f/2 22, 11-22