I'm trying to have fewer photos on my iPhone (3GS running iOS5), and if possible to have them searchable by naming them.
With this in mind I used Image Capture to download all 500+ pictures onto my MacBook Air (running Lion), then synced my iPhone with iTunes to remove them all.
(To do this, I made a folder called Empty Folder and put it in my Pictures folder, selected it in the iPhone's Photos tab in iTunes - you can't, for some no doubt magical Apple reason, select any folder that isn't a subfolder within another folder - and synced. Only way I could find to do it, other than wearing out my fingertip by deleting all the photos one by one. I couldn't see any way of deleting a whole 'album' of photos on the iPhone itself or in iTunes.)
I then named all the photos I wanted to keep - 111 of them - and dragged them into another subfolder in Pictures, this one called iPhone Photos.
I connected the phone again, and in iTunes and the phone's Photos tab I deselected Empty Folder and selected iPhone Photos.
All hunky dory. All 111 photos are now on the iPhone.
Except that there are now three albums on the phone: the empty Camera Roll, Photo Library with 111 photos, and iPhone Photos, with the same 111 photos, organised differently.
Is there any way of getting the photos I want to keep into the Camera Roll and getting rid of the extra albums?