Q: can I backup all my photo's to iCloud?

iCloud is not a storage service, just a sync and iOS backup service.  On a mac, the only way to get photos to icloud is via photo stream, but that just for sycing photos between devices.  The photos only stay on icloud for 30 days and up to a max of 1,000 pix.

see this support article:

iCloud: Backup and restore overview

The following items are not backed up to iCloud. You can sync these items with a computer using iTunes:

• Music, movies and TV shows not purchased from the iTunes Store
• Podcasts and audio books
• Photos that were originally synced from your computer

So the iCloud backup will contain all images in the camera roll, but not albums originally synched from your  computer. To store and backup photos on your mobile devices add them to the Camera Roll.

You might also wish to look at: iCloud: Troubleshooting restore issues with iCloud Backup

Regards

Léonie

And since you can't move things to your camera roll... You don't backup your iPhoto pics to iCloud.

And since you can't move things to your camera roll...

If you have iPhoto on your IOS device you can:

• Sync your photos to iPhoto and view an album.
• Press the "Share" button.
• Select to share to the "Camera Roll".
• Select photos to share.

Like this (with iPhoto on IOS 6 on my iPad 3):

So basically I paid for the priviledge of being able to share my photos on other Apple devices?  The storage is only for a limited time and a limited number of pics?

Whatta waste of money that was!