Видео ютуба по тегу Stupid Lens Experiments

Vintage Prime vs. Modern Zoom lens. (Vivitar/Tamron 300mm).
Vintage Prime vs. Modern Zoom lens. (Vivitar/Tamron 300mm).
Yashica DSB 50mm F1.9 lens disassembly (Oily aperture) with Stupid Lens Experiment.
Yashica DSB 50mm F1.9 lens disassembly (Oily aperture) with Stupid Lens Experiment.
Can Isopropyl Alcohol loosen a stiff focus ring? Repairing a Mamiya / Sekor 55mm F18 lens.
Can Isopropyl Alcohol loosen a stiff focus ring? Repairing a Mamiya / Sekor 55mm F18 lens.