I have 2 5DMarkIVs and one of them, when I do any kind of long exposures (from 20seconds or longer) I get a blue line in the upper 3rd of the picture! an it's not easy to get out when you're doing night photography! My milky way shots are ruined and I sent it in to CPS repair...... they did NOT solver the problem........ recontacted them about it...... they were supposed to send me a prepaid lable for me to send back to them and they only sent the form to fill out about the problem....... the email, with the form, told me that they were going to send a seperate email with the lable and they NEVER DID! It is now a week since and I fear they are trying to sweep me under the rug! I had already called up twice about this....... they are very nice on the phone....... and then they don't do what they told me they were going to do.........they even got mixed up with my other 5DMarkIV and wrote down the wrong serial # on the form for me to fill out! I am going away for a few days and I won't be able to use this camera and I needed 2 cameras........ now I have to use my very old 5DMarkII instead of my 5DMarkIV with issues that CPS should have fixed! Very upset with this situation! Never had a problem with CPS repair service before! Can anyone help me?
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