I'm an old schooled person with most of my experience with 35mm film instead of digital, hence I tend to shoot at or below 200 ISO. And, I'm contemplating at an upgrade or getting the 70-200L f2.8 IS II to complement my 70-200L f4 IS, or get the Sigma 85mm f1.4. Or should I just start shooting at higher ISO speed? I found that many of my photos have motion blur due to subject movement when I shoot in shady area at 100-200 ISO, at f4 and 1/100~1/200s with my Canon 5D mkII. However, the 70-200L f4 IS produced damned good bokeh, and so as the 100L macro bokeh. Can someone please post their 70-200L shots at f2.8 and f4 bokeh, as well as 85mm at f1.4~f2. Thanks Canon 5D mkII, 70-200L f4 IS, shot at 200mm and f4, image is cropped, subject is around 12'~15' from camera, and background is around 20'~25' behind subject. Canon 5D mkII, 100L f2.8 IS macro, at f2.8, subject is around 6'~8' from camera, and background is around 25'~30' behind subject.