Jeff's 70-200

I'm a fan of Jeff Ascough. He's one of the best wedding photographers in the world, from UK. His shooting style always amazes me. He's currently shooting with Canon system. A few days ago he updated his blog, mentioning that he just got his brand new EF70-200mm F/4L IS USM. The reason being, he's tired of the weight and size of his previous EF70-200mm F/2.8L IS USM. I'm quite surprised that even a professional like him would have the same complain as I do, but due to the excellent image quality of the F/4L IS version, it's rather easy to sacrifice a stop of light/speed.