I've always loved close-up photography starting with a book I remember from first grade on spiders. I actually couldn't get past the first few pages of the book without freaking out and slamming the book shut, but I always came back for more.
About a year ago I made a clip-on lens for my iPhone and everyone is always asking me where I got it. It's very easy to make with just a few tools and materials. I'm not the first person to make one of these, but this is my take on it.
Step 1: Gather the Materials and Tools
The first thing you need to do is gather the materials and tools for assembling the lens.
Tools: pliers, small drill bits, X-Acto knife and/or saw, fine metal file and/or sandpaper, hair dryer or heat gun, tweezers, wire cutters
Materials: 4" of .04" music wire, disposable camera, 1/16" heat shrink tubing (4"+, 1 or more colors), super glue or RTV, O-ring assortment
The camera can be one that you have and have used up and removed the film, or you can ask for a used one from a one hour photo lab.
Step 2: Cover and Bend the Wire
Take a length of the music wire and slide a 4" length of the heat shrink tubing over it and heat it up. The tubing will shrink and hold on to the wire.
Snip the wire to length (4"), if you haven't already before covering the wire with the heat shrink.
Using the pliers, shape the wire as shown in the photo. Each of the sides should be about 1/2". You will make a total of six 90 degree bends. Be careful about squeezing the wire too much with the pliers; they will damage the heat shrink around the tubing. Put a couple of layers of tape around the jaws of the pliers, if that helps.
Step 3: Add the Heat Shrink Banding
Cut some 1/8" long pieces of heat shrink in different colors. This will be for the banding on the wire, which will help hold it on the iPhone, keep it from scratching the phone, and make it easier to see when you misplace it. (That will happen A LOT).
Slide the pieces onto the bent wire and use heat to shrink them in place. Don't try to do them all at once, they will slip out of place.
Step 4: Salvage the Lens
Start to crack open the camera. There are two parts you want off of it: the lens and the outside bezel. The bezel will probably be part of the whole front plate. Try to choose a camera with a bezel that is small enough to use. The one I found has a bezel about 3/4" in diameter.
Pry open the clips. There should be two on either end of the camera.
Take out the lens and set it aside.
Cut the bezel off the front plate. The plastic will probably be thin and it should cut easily with a small X-Acto saw blade.
Step 5: Clean Up the Bezel
Smooth the back of the bezel with a piece of sandpaper or a file.
Step 6: Glue the Lens and O-ring
Drop the lens into the bezel and make sure there aren't any little tabs or standoffs preventing the lens from seating into it for gluing.
Apply a VERY small amount of glue and place the lens in the bezel with tweezers. Too much glue will create a haze on the lens and get all over the place. If you are at all worried about hazing the lens, use an industrial white glue or RTV. Allow time for it to cure before proceeding.
Find an o-ring that will fit into the back of the bezel and around the lens. This will help hold the lens in place when on the phone.
Glue the o-ring in place. Use super glue or RTV. RTV will take a couple hours to cure, at least.
Step 7: Finish Bending the Wire
Fit the bent wire on the phone and make where the arms pass the lens on the phone. You will want to make 90 degree bends here and then trim the wire.
Bend the wire as shown in the photo and clip. Leave about 1/8" after the bend.
Trim off a bit of the heat shrink and shrink a little band around the cut end.
Step 8: Prepare the Lens for Mounting on the Clip
Drill two holes into the edge of the bezel 180 degrees opposite each other. The hole should be a snug fit for the wire. You can use a short piece of the wire for a drill. The clipped end of the wire should be sharp enough from the wire cutter. Or you can heat the wire and plunge it into the bezel and melt the holes.
Attach the bent wire clip to the bezel. That's basically it! Mount the lens to the phone for a final fit check.
Step 9: Use It!
Go take pictures! The great thing about the lens on the iPhone is that it will allow you to take ground level shots, which is perfect for macro photography.
You can see more on my blog, Sir Richard's Tool Kit.