Hey please check the following steps to see if you went wrong:
1.Connect your iphone to your computer.
2.Once it has detected, Open iTunes and select the "Photos" tab. 3.Check the "Sync Photos" box at the top.
4.From the drop-down menu next to that, select the program or folder that contains your photo library.
5.Then just select the photos you want to transfer and drag them to your pc.
Another way is to get a photo backup program to transfer photos from iphone to Mac.And of course the easiest way is to google your question how to transfer photos from iphone to pc to find articles that may be of great help.
