Camera Basics: Shooting Through Glass
There are some annoying problems associated with trying to photograph objects through glass. Built in camera flashes typically cause a reflection in the glass that ruins the shot if you try to use a conventional macro lens, and it isn’t always possible to get close enough to take a clear photo of the object in the frame. You can also run into problems if you are trying to photograph living creatures, because proximity of the camera might startle the animal and ruin the shot.
The solution to this problem is to use a telephoto lens with a macro filter fitted onto the end. Macro lenses that screw onto the end of your camera are not a new idea, and they can be purchased very cheaply on ebay. When you want to photograph through glass, attach the telephoto lens to the camera, and then screw on the macro adapter. Take a couple of steps backwards and adjust the lens until your camera’s auto-focus can cope with the modified lens. You should find that you are able to take clear macro photos without any flash-back.