This is my first post so be kind.
I programmed the custom settings (C1, C2, C3) within days of receiving my Canon 7D. I figured they cover 75 percent of my picture taking scenarios right now.
I was shooting a couple of days ago in a florescent lighted room mostly in the P mode. None of the programmed white balances looked natural (no surprise there )so I quickly did up a custom white balance. Pictures looked great.
The next day I was shooting in the same room with the same light. My session was turning to Portraits so I quickly switched to my custom C2 mode I programmed for portraits, and shot a couple of pictures. I realized after looking at the second or third picture that the White Balance had switch back to Auto White Balance (AWB). This was correct since it was what I programmed under the C2 setting. I quickly switched over to the Custom White Balance, confirmed the symbol on the top LCD and kept on shooting. About half way into my session I realized the pictures were not being taken with my custom white balance setting. I rechecked the top and bottom lcd panels and both showed the custom white balance symbol. I ended up going back to the AV mode because I could not get the custom white balance to take effect in C1, or C2 and C3 for that matter. Even after I saved them with the custom white balance set.
After playing with the camera for over an hour tonight I figured it all out. This is definitely a program bug. When you use a custom mode you have programmed, (C1,C2,C3) you can change any parameter while in the custom mode and it will take effect. It will switch back to its original setting if not saved but it will change on the fly. The custom white balance will not take effect even though the camera tells you it has.
In order to set the custom white balance under a custom mode, you must go into the custom mode, say C1, set the custom white balance and save it, then save the settings under C1. If your in AV mode set a custom white balance, then switch over to C1 C2 or C3 and pick your previously saved custom white balance, then try to save it with your C1, C2, or C3 setting, it will not take effect.
I'm posting this so no one else has this potentially disastrous problem and to make sure I'm not the only one with this problem.
Doesn't seem right to me. I welcome other opinions.
I'm running Firmware 1.2.3
Unfortuneately the next day after this happened I received the dreaded Error 20. My camera shop is replacing the camera but they stated it would take 10 to 20 days since they have 25 7D's on back order.