Super zoom

myminifactory

In my younger days I was a photographer, still owning photo equipment on Olympus 4/3: Sigma 80-200mm, Olympus OM 50mm, Olympus 14-42mm and Olympus E-520. I wanted to capture the moon but all I saw was a small speck on 1/6 of the screen (at 200mm zoom). Then I decided to create a super-zoom. Combining lenses in this order: 200mm with focus set to infinity, inverted 14-42mm fixed at position 14mm and focus set to infinity, 50mm with focus set to infinity, camera in manual focus mode, aluminum profile (cross-section) measuring 700mm*20mm*15mm, 3mm screw and nuts. The zoom is calculated using the formula: 200mm * (50mm / 14mm) ~ 700mm. Focusing occurs by shifting the 200mm lens forward or backward. The aperture holder increases image sharpness since the lens is manual focus and the diaphragm without the holder is fully open. The result pleased me, but the moon hasn't appeared yet! I'm waiting for her. This project is more of an idea than a DIY project for everyone because holders are calculated for specific lenses and likely nobody has them in the same composition.