I am testing the low light condition for 5d2+ 35L. The room is dark. I shoot on the screen of the laptop. The photos only show half of the screen. Is this 35L's problem or 5d2's problem?
dude, that is always the case if you shoot at a LCD screen, if you want to shoot a LCD/LED screen try to use a shutter speed of about 1/80sec or less. Anything above that speed is a random lucky shot.
Now you know why the refurbs you buy at B&H and Adorama only have 10 clicks on them. Cameras returned as defective. Nice! Pretty soon we will have to issue a license to buy anything above a point and shoot. Canon and Nikon are doing a good job with the advertising selling high end DSLR's to well, you get my drift.
You are given bad advice by those guy's, asking you to send your lens !
Using this combination, you just can't exclude a camera's error.
In order to define and solve your problem, please send me AND lens AND camera towards following p.o.box .......