I started to take telephoto pictures with my 10x binoculars with great sucess a year and a half ago.

Several years ago, I did this very thing with my 35mm SLR. I had lots of fun with it and found there are many qualities of peep-hole lenses. Usually, the more expensive, the better. I now have one that has a field of view of 190°! It is great unless you don't want to catch your shoes in the picture! Ideally, you want the rear element as close to the objective lens of the camera as possible (but not touching it). The focus will be around 0.7m and the aperture will be about 1.5 to 2 f/stops darker.

One fun picture I made was of a 1/3 scale model of the Eiffel Tower at Kings Island amusement park. I moved the image of the tower to the edge of the circle, making it look to be a near crescent!

Warning!

1) Most digital cameras that have motorized mechanical zoom lenses that extend out from the camera will automatically retract back into the camera after a short time if there is a long delay between your photos. The motorized mechanisms can be damaged if there is any resistance when it's retracting. Your camera might have a setting to turn off or delay the auto-shutoff or auto lens-close.

2) If you use tape to hold the peep-eye on, any tape residue left on the part of the lens that extends out from the camera may cause a problem with the mechanism. The parts of the lens that extend have very tight tolerances.

3) Be very careful when holding anything including a metal peep-hole in front of your camera lens. You may scratch your camera lens. (Don't touch the lens with your fingers or wipe it with your shirt or kitchen napkins!)

4) Take great care with this project!

about 10 years ago when i was in the mass nat guard,we were at anual training,i forget the post,but you go over the bourne bridge to get there. anyways,i was a T.O.W. gunner,them big tubes you see now on the armys humvees.

anyways,,there we were camped on a ridge,and some ship half sank in the bay,so using the scope from the tow launcher,i put one of them dispoaable cameras up to it, and not knowing if i got the pic or not,till the film was developed, i aimed at the ship,and took the pic.

well as it turned out,i got the cross hairs right on the middle of the ship.
it turned out perfectly.

im not even a camera buff,but i wanted a camera to take pics of the guys and such.

i suppose if you wanted,you might be able to figure out what ship it was that was mired in the muck.

This does seem like a good idea, but only really if you actually HAVE a peephole just lying around your house somewhere. I would have liked to see how to make a peephole rather than using a pre- made one.