I guess / hope that it would help if we all would take the time to leave a report to Apple to solve this problem.
I just used the form that mfarqwa also posted http://www.apple.com/feedback/iphone.html to let them know the following:
"First of all, love the iPhone!
But this little problem is getting more and more irritating! When a picture is taken with the iPhone in landscape modus and the volume button on top to use the right hand to make the picture it turns up upside down when I email the photo's or use them in forms to upload the pictures to websites.. This is becoming very annoying!
The problem is, I guess, that before the volume button could be used users turned the device with the volume button downwards in landscape mode so they can use the right hand to touch the capture button in the software.
The "problem" that comes with this is that there are left en right handed people. I don;t know how left handed people are using the iPhone to take pictures (volume up of down / volums on the right upside or down leftside ). But this problem could be fixed with a setting which will influence the picture that is taken. Switch on, landscape and volume button up than it is a normale picture. Switch off and the "normal" landscape picture can be made with the volume button on the down side.
I and many others would love to see some kind of feature i described because every single time I need to send pictures on the mail of by uploading to show the pictures on a website I manually have to change the view..."
I think that it would help. If you don't try then nothing ever happens 🙂