Issues with shutter and lighting.
So I recently purchased the Nikon D610, I have been using the D3200 and am aware that these cameras are drastically different. My best friend has the D610 also and she loves hers and I have used it thats what made me purchase it.
She has no issues with hers, but I am having issues with the shutter not being consistent, so if I take photos back to back then the shutter slows down, usually in the middle photo I can hear it slow and the images come out bright and blurred. Another issue I am having is with the edges all being darkened in my photos, I have repeatedly went through the settings trying to fix this to no avail. When I received the camera (used) the setting to crop the sensor was on, I turned that off and that is when the dark edges began.
One of the many things that made me purchase the camera is simply because of the full frame sensor, so I would like to be able to use it. No, I am not a pro as you can probably tell but I was really hoping maybe someone could help me.