« on: January 13, 2013, 07:04:45 PM »
I did a quick and dirty experiement today to check the exposure compensation.
#1 photo: 5D3, Kenko 1.4X TC, 70-300L, 0 EV, blown highlight is evidence, couldn't be recovered in LR4
#2 photo: same as above with -1 EV compensation, much better, some highlight on the bird is still blown.
These are quick and dirty experiements, so appologize to those of you who are purists
and just for kick, I swapped out the Kenko for the Canon 1.4X III. AF is a bit sluggist and the lens makes a grinding noise. I put the combo on my 1DX and the same noise persists. My hummingbirs were not cooperating, so I went out and shot an Amerian Kestrel instead. The IQ is fantastic, but I guess we know that already. So, if Canon can fix the AF issue with firmware, this is in fact a viable option.