I have battled and lost by using import, especially between Apple devices and Windows PC.
I put Dropbox on both and set up to auto download daily. Dropbox is free for all devices. Get it on the iPad and it sends the link to sign up to your email. It will download all your pics, video etc to an encrypted "Cloud"
You can manage your content on dropbox as well as on your devices.
You get 5GB of free storage.
If you have a Mac, when you plug your iPad into your computer, it will open up a viewer for you that will allow you to import your pictures. If you are using PC, then you have to do it other ways. It can be done if you turn your iPad into a storage device on your PC it will just open up a window that will have an area for you to see all your pics and then you can transfer them. The easiest way though that I can think of is to use an online storage to exchange them such as Dropbox or Sky Drive, or even Google Drive....Anything like that where you can have the iPad upload it's photos to that, and then have the computer access that same online storage drive and download them to the computer.