How to use the photo viewer to download your photo
Browse through the thumbnail images until you find the photo you want, then click on it
You will see a larger version of the photo, but not full-size
If you wish to download a full-size image, click the "Information" button at the bottom of the screen
Then click "Download full-size image" button at the bottom of the information panel at the left of the screen
(I'm ready, take me to the photo viewer.....)