Canon 17-40 f4 test. All shot at F4 with varies focal lengths. Man I wish this lens was faster. Nice and sharp wide open. Has great close up focus to around 4 or 5 inches at 17mm. Some color grading would really make this footage pop. Mild color correction was done with 3way in FCP. Blacks are not crushed and saturation is low. Lots of room for grading.
Used Kipon adapter.
UPDATE: I found when using the Kipon wide open on setting 1 with this lens I get a strange haze in the middle of the frame. When I set the Kipon at 2 it goes away. Strange.