German soldiers at WW2 re-enactment
Taken with a home made lens made from one of the plastic plano-convex elements from a battery powered slide viewer. The lens was selotaped onto a piece of plastic tube, which in turn was placed over a narrower tube which fitted snugly into an extension tube mounted on a digital SLR. An old sock completed the assembly, providing just the right amount of friction between the two tubes to allow the outer tube to be slid backward and forward to focus. The focal length is approximately 280mm, so with the inner tube having a diameter of 40mm, this gives an aperture of around f7.
German soldiers at WW2 re-enactment
Taken with a home made lens made from one of the plastic plano-convex elements from a battery powered slide viewer. The lens was selotaped onto a piece of plastic tube, which in turn was placed over a narrower tube which fitted snugly into an extension tube mounted on a digital SLR. An old sock completed the assembly, providing just the right amount of friction between the two tubes to allow the outer tube to be slid backward and forward to focus. The focal length is approximately 280mm, so with the inner tube having a diameter of 40mm, this gives an aperture of around f7.