Hello again! Today i had the opportunity of taking some photos with a EF 70-200 f2.8 L USM and its an excellent lenses i love the image quality, the colors... I also felt on my arms the weight of the lenses, and to balance it was a bit hard because i couldn't stand still, i think that with a bigger body it could had been easier to balance. Know i would like to try the EF 70-200 f4 L IS USM, i think that the image quality, sharpness and colors would be similar ore even better than the EF 70 200 f2.8 L USM??