Don't know if any of you have come across with this...
I bought a old 5D that originally works fine. After couple of days, all of sudden, there is the infamous err 99 message shown. Then I found that all the pictures I took have about up third black. Like the picture below.
By using B mode, I found that something is blocking the sensor! see the picture below. Is it the shutter curtains? why it stuck there? and how can I get it fixed?