Hello all! I have been reading this forum usually but it is actually my first time writting a post here. It is a pleasure to meet all of you. A couple of weeks ago I found an issue while shooting outdoors. I own a Canon 70D which is in good condition. I was shooting a timelapse in a half-cloudy day and when I after checked the pictures I realized that when there was sunlight in the scene a well defined "over-exposed" band appeared in most of the pictures. The area is always in the same region of the picture. First I thought that it could be some scratch in the lenses.... however after testing with other lenses, cleaning all the lenses and even the sensor of the camera... the "over-exposed" area stills in all of the pictures. (I provide some example pictures. ) I have realized that the "over-exposed" area is well defined at wide diafragm apertures , while in narrow apertures it starts to "blur", becoming less annoying. Just in the opposite way as usually happens with "dust spots". I have already checked the sensor but it appear pristine, without any sight of scratches, liquid stains or even dust over it. Example picture. (Shot at 3.5 mm) Example picture. (Shot at f 3.5 mm without "high light" in the scene) Another Example Picture Shot at f 3.5 with high light in the scene. Comparison of Shots (Different aperture f 3.5 vs f 22) 3.5 22 I have not found any thread or people with a similar problem. I still thinking that should be related to the sensor (despite strongly hoping that It is something easier or not so expensive to fix). This is the reason I came here looking for help. ANy comments or Ideas are really welcome. Thanks in advance! Cheers! Jorge.
are you able to put the shutter into closed position on the camera? i'm only guessing but it looks like a light leak from a shutter blade
I have not seen a problem like that before but I agree with Caladina that it appears to be some sort of shutter problem. Your camera needs to go in for service either at a Canon Service Centre or a trusted local repair shop. Where are you located?
Thank you for your fast answers and warm welcome Caladina, Craig and Ray. Regarding my problem, I am thinking about going to an official Canon Service next to my living plce (I am right now in Madrid, Spain). Hopefully it is something easier (or at least cheaper) to fix than a damaged sensor. I actually checked that the shutter curtains are closed and working properly when shooting, looking to the lenses with a wide open diafragm, and nothing weird seems to happen there. Thank you for all the help! If I found something more about this strange fault I will keep this trhead updated.