If you're having trouble figuring out which image is the right image when adding a Picture to your Inspection, there's a handy trick that might make your life a bit easier...
iPhone/iPad
If you're using an iPhone, you can pinch-zoom on the picture selection gallery, just like you would if you wanted to zoom in on a single picture (video demonstration).
Android
Method 1
If you're on Android and having trouble finding a particular picture, you might see an icon with four arrows pointed outward from the selection screen (as circled below). Tapping that will allow you to see the image at full size before selecting it.
Method 2
If you're on an Android phone but don't see the icon in Method 1, you might see a button with three dots, as shown below. Tapping that will likely take you to a view that does show the zoom icon indicated in the previous point.
Using these methods, you should be able to get a better look at images before selecting them!