Why Is My Canon Camera Blurry? camerasnipe.com/why-is-my-canon-camera-blurryPrivate View Why does high ISO lead to blurry photos? High ISO settings amplify the camera’s sensor sensitivity to light, but they also enhance the visibility of digital noise, which can reduce image sharpness. Can I update my Canon camera’s firmware myself? Yes, updating your Canon camera’s firmware is a straightforward process.