How do I delete photos from my iphone?

Well, I can think of 2 ways to do this.

1: On the iPhone you can go to photos/camera roll/select a picture and then tap the trashcan icon and it will be deleted.

2: If you have iPhoto set up to automatically see the iPhone as a digital camera, you can import the pictures and then delete the originals (there is a button that you can choose in the iPhoto import screens.

Hope that helps.

The same way you got them on the iphone, the sync process.

Remove the photo from the folder/album that you have selected to sync to iphone and the photo will be deleted from iphone when you sync.

The methods he provided are for Camera Roll photos (taken with iphone).

Yep, sorry..I did not think about the iPhoto pictures that may have been added to the iPhone. My oversight.