LensRentals received its first Canon EOS Rebel T6s/760D and T6i/750D units and has identified a sensor problem with a number of those cameras. Out of about 10 copies of each model, 6 contained sensors with noticeable defects in their sensor stacks. These layers of glass on top of the sensor contain a pattern of dust-like spots or particles that are visible when studied under angled light. Read more
Articles: Digital Photography Review (dpreview.com)