This is the first lens review I ever done. I had to share my experience with this lens! I simply adore it, I do a lot of reportage and PJ work and this is definitly a lens I can fully trust. Half of my Portfolio image are made with that lens.It's that good. I must says i am a pixel peepers... to me,Unless the moment is really important, if it is not sharp at 100% then the image is good for the garbage.With this len,the number of keeper is amazing. I have used this lens on the original 5d,5d mkII and 5dmkIII and 1d mkIII. on all of theese bodies even mkI and mkII AF was perfect and IQ was close to be perfect.
For as long as I will be able to run and walk this lens will do the ideal job
I highly suggest this lens!!