Birdhouse Spy Cam, West Linn, OR 97068US
lens specifications
Both the Hawk Eye and Red Robin Nature Cam have a 4.0 mm, 70-degree wide angle, variable focus lens. With a few twists (be sure to loosen the little set screw beneath the lens . . . no need to retighten) you can literally see your finger prints from 1/8" away. A couple of twists the other way and you are out to infinity.
Equally important is the depth of field. From only a few inches away, the entire object (birds in our case) will be in focus. In a typical birdhouse the camera may be anywhere from 3-12 inches above a bird's head, but yet all of the bird and the eggs it is sitting on are in focus.
One other point . . . because the Hawk Eye has a wide angle lens, the apparent size of the object gets very small with distance from the camera. It is therefore best to get the camera as close as possible to the bird feeder, bath, or whatever you are watching.
