If it looks like water has exited either of those holes, you aren’t going to buy this camera. There are also two open holes, I think for draining water. There should be seven screws on the camera bottom, and an eighth inside the tripod socket. There should be no dirt inside the tripod socket. This area should be clean the sticker should not be peeling off and it should be perfectly shiny and readable, and there shouldn’t be nicks on the plate surrounding the tripod socket. Look at the ribbed plate around the tripod socket and the stickers next to this plate for signs of wear. If you see a serious scuff or ding, it could mean that the camera has been dropped, and you might want to pass. Right off the bat, any shininess drops the camera from a 10 (Mint) to a 9+ or 9. These will show up as “brassing,” or shiny spots where the surface is beginning to wear off. The first signs of wear will appear at the “lips” around the edges on the bottom. It’s impossible to use a camera without putting some light scratches on the bottom of the camera. This is where you’ll find the most scratches by far.

This is probably going to tell you more than any other test. Look for scratches, dents and other signs of wear. Analog audio/video cable (which you’ll never use).Whether a given item is included is up to you and the seller, but get a look at every item before you start, because they are all part of the price negotiation Here is a list of typical things that are included. Inspect each item that comes with the camera. Small flashlight (a cell phone will do).Laptop computer (for the shutter count test).USB cable (MiniUSB to USB it should come with the camera).You and/or the seller must have the following items for your inspection: Maybe others will help me expand this guide into a general guide for other DSLR’s as well.

Now that I’ve owned the camera for about six months, here are the inspection tips I’ve come up with. When I purchased my used 7D last summer, I tried to find tips online for how to inspect it, and I couldn’t find any.

Canon 7d firmware 2.0.5