Here is my simple and not too serious tutorial on “reverse-lensing” in order to make macro pictures.
It really is as simple as I made it look in the little graphic. I simply hold my lens backwards in front of my camera. Since the lens is not attached there is no need to do anything with the aperture. I simply adjust my ISO speed and shutter speed to give the desired exposure. I will say, that the result you get from using this technique will not give the same consistent high quality results you would expect from a $1000 lens, but it is not bad considering you can acquire a 50mm lens (which I use) for a $100. Finally, always remember, that art is a personal thing. Yes it can be shared or given to the public for criticism, but your art will always be yours. Whatever techniques you use to create art is your decision. I find “reverse-lensing” to be a fun and spontaneous way to make macro photographs.
Here are some of the pictures I made using the “reverse-lensing” technique. For each of the photos, I used a Canon 50mm f/1.8 lens.