I need to take photographs of a close flat surface with controlled lighting. I have an idea to do this, which is to use a dslr with a macro lens. Use a LED ring (which I see are usually used for macro) and a tube extending !
The custom cylinder to block light will be some 3d printed cylinder to go over the led ring. I can make this between a few centimeters to about 10 centimeters.
What type of lens would be best for this close work. I have macro attachments to my canon dslr, but it was wondering if there is a better lens that can focus in this short distance.
To make this more generalized. I am curious about focusing on a flat surface close to the lens. For example, if the camera is taking a photograph of a printed photo. Or if I wanted to photograph a wooden table to see the grain and fine details.