A few weeks ago, you might remember I wrote a post about using a reversed lens instead of an expensive Macro lens.
Well, I’ve recently added another reversing ring to my collection. This one has a 40.5mm male thread on one side and a 52mm male thread on the other. It allows me to reverse my 14-42mm f3.5-5.6 kit lens onto the front of my 135mm f2.8.
To estimate the magnification factor, divide the focal length of the smaller lens into the focal length of the longer lens. With the combination of my lenses (the kit lens set to 14mm), I can get close to 10x magnification.
The image below is of a single sea salt crystal taken with the two lens combination on my Olympus E-PL1.
Because the lens element was so close to the salt, I used a small LED cupboard light, pointed between the lens and the table, to illuminate it. Another thing to remember is that depth of field is almost non-existent at these magnifications, so the camera was mounted onto a slider, which was bought from ebay for under £15.
With the camera adjusted as best I could by hand, I then adjusted the slider until the majority of the image was in focus. You can see that the edges of the salt crystal aren’t sharp, which means that the DoF was only a fraction of a millimetre!!
Focus stacking would have solved the problem, but the idea was just to show what could be achieved with a £5 reversing ring 😉