Actually, this isn't the first problem I had with my camera. My lens gave in first. My stock 18-55mm kitlens broke down and decided it didn't want to auto-focus anymore. But at least it was still working perfectly, save for the auto-focus issue. Furthermore, I had another lens I could use. We have a 28-80mm lens from our old film SLR (Canon EOS 500) that works perfectly with my Canon EOS 500D. It doesn't focus as fast, has no IS and is not as wide but it does work perfectly and is significantly longer than my kitlens. I didn't really mind having a broken kitlens, I can have it repaired when I have the money and also, I was planning to buy a 50mm f/1.8 prime lens.
After a few weeks of using the 28-80mm lens, I got the dreaded Err 50. It happened at a resort as we were swimming. Take note that the camera never got wet. And though it has been stored in an airconditioned room during the hot summer, I made sure the its bag had plenty of dessicant to avoid moisture and possible fungus.
Canon defines Error 50 as:
So far I've tried the following fixes:
- Power cycle
- Removing the battery
- Formatting the memory card
- Using a different memory card
- Shooting in different modes
- Using a different lens
- Updating the camera firmware
- Using an eraser to "clean" the metal contacts on the lens and camera body
None worked. So if you have any suggestions, please feel free to share them. You can contact me or leave a comment. At this point, it looks like my only option is to take this thing to a Canon service center.