So yesterday I was using my Canon 450D, and I was taking photos in burst mode, and suddenly it stopped and an error 99 screen popped up. I replaced the battery and nothing happened. I did everything to try to fix it but nothing worked. Today, I decided to take another look at it, and I flipped up the mirror and saw this- I have no clue if this is normal, but if it isn't, it might be the cause of the error. Also, whenever I turn the camera on, the shutter puffs out a bit, then goes back to normal. Please help me, as I don't have the money to but a new DSLR. Even if those silver things don't relate to the error, does anybody have an idea what might? I already tried a new SD card, lens, and battery. Thanks in advance.