To get really sharp macro photos you must use small apertures for sufficient depth of field and really rigid support and non moving subject. Or just use flash. The problem is that the photos sometimes look unnatural because the light is harsh and the illumination quickly falls off as the distance from the flash increases resulting in dark backgrounds. Macro flashes are expensive and since they are closer to the subject, the background is even darker. So I came up with an idea to illuminate bacground and the subject evenly with just one standard external flash.
This diffuser is intended to work in the macro range: 1:3 or larger magnification on an APS-C DSLR
It has the following advantages:
* cheap! You probably already have most if not all of the parts
* rigid and strong
* flat - can be taken almost everywhere and takes almost no space
* adjustable subject/background lighting
This is my first Instructable and also my entry to the Camera & Photo Skills Challenge
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* filter for your macro lens
Most macro lenses use 52 mm filters. These can be found dirt cheap everywhere and you probably have few of those in your attic. I used an old red filter and took the glass out but you can use clear/UV filter if you are afraid to cut yourself. Thicker is better.
* plastic jug - with a large flat surface
* knife or scissors
* 5 minute epoxy glue
* sandpaper
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This is pure genius. I might have to build it right now.