Step 1: Free download Tansee iPod Transfer Photo and then install it. You can konw more about it by referring here.
Step 2: Connect iPod to your computer.
Step 3: Launch Tansee iPod Transfer Photo and all the photos in your iPod will display, screenshot as follows:

Step 4: Select the photos to be transferred to your computer, the selected file will marked with red border.
Step 5: Click "Copy" button to select output path and start to transfer photos to your computer:

Options Setting
Click "Option" button to setting your back up features:
1. Backup Resolution: To select the photo size to be backup.
2. Backup File Format: To select backup photo file format, Tansee iPod Transfer Photo support BMP and JPG file now.
3. Backup Path: To select directory for storing the backup photos. You can select backup directory for each photo during backup by check "Ask Every Time" or store all files in a specified directory by checking "Save Here" and select the directory in the edit box.