Sorting pictures in photo album for iPhone?

So I have 199 photos in my camera album. I have different types(funny pics, pics that I took, recipes, etc) I want to sort them all like that. I know you can add photos to different albums, but the photos are still there in my camera roll. I want to add them to new albums and have them not be in my camera roll. For example, I have 100 pictures that I took, and 99 pictures I saved from the Internet. I want there to be 1 album with 99 pics and anther album with 100 pics. Not one album with 199 pics and another with 99 pics(the same ones) which is how my phone does it. So is it possible to save pics to a different album without it being in my camera roll?

I don't think that is possible as it is all saved to one hard drive, you would need an external one or maybe download an app which does it for you?

There may be other ways I don't know about, but this is my method:

1. Set up a folder on your computer named "iPhone photos" (inside that folder, you can create sub-folders of your choice to help you sort and keep track of your pics)
2. Put the photos into that folder, as well as all other photos you want to have on your phone.
3. Plug in your phone, open iTunes, go to your device, then to photos.
4. Tell iTunes to synchronize your photos with the iPhone photos folder.

Note: You must make sure to back up any photos you have on your phone first, because once you synchronize with that folder, the other photos will be gone off your phone. In future, just make sure that all your photos that you want on your phone will go into that special folder on your computer.

You can now delete the photos of your camera roll, because you are no longer creating a "virtual album" on your phone, but you have an actual separate one on your computer that you are synchronizing with.