P: Program AE. The camera automatically sets the shutter speed and aperture value to suit the subject's brightness. stands for Program. AE stands for Auto Exposure. Set the shooting mode to . Press the button and turn the or dial to select . Focus on the subject. As you look through the viewfinder, aim the AF point over the subject, then pressTry using a remote shutter release plugged into the side of the camera. If the remote shutter works fine, it may just be the shutter button. If the remote release does not work, your camera has a serious problem and needs to be repaired. The cost of repair could possibly exceed the approximate $600 value of the camera.
Shutters may be completely different in mirrorless but when Canon Canada replaced my shutter in the 5DSR they replaced the sensor at the same time. Not sure if the sensor needed replacement or they did it to essentially give me a brand new camera all at once. It was $1100 CDN for both. So about $800 USD.
It was a $479 repair for a shutter that stopped working after only one year of purchase. This is a shutter that was listed to have a half-a-million count shutter life on it. Canon never answeredIn case anyone else has trouble parting with their 5D4's or doesn't want to upgrade to mirrorless, Canon will replace your shutter for $450 per camera -- I sent 3 of my 5D4's in for full shutter replacements for my upcoming wedding season. So if you're on the fence about keeping your current full frame body or unsure if you want to switch tooAIc.