Nikon PK-3 Analogue camera

This Nikon PK-3 automatic extension tube is a fundamental accessory for macro photography enthusiasts who use the Nikon F system in AI or pre-AI models. The device has a thickness of twenty-seven point five millimeters and allows a drastic reduction of the minimum focusing distance of mounted lenses by increasing the magnification ratio to capture minuscule details. The auctioned exemplar is entirely metal, exhibiting the typical Japanese ruggedness and construction precision that characterize Nikon accessories of the era. The tube maintains the mechanical coupling of the diaphragm between the lens and the camera body, ensuring maximum operational practicality during shooting. The cosmetic condition is very good, with the black barrel bearing sharp, clearly legible white engravings including the inscription “Japan.” The front and rear mounting flanges appear clean and without significant wear, ensuring a smooth and stable connection. This accessory is ideal for completing a vintage analog kit or for experimenting with macro photography using classic Nikkor optics on digital cameras through the related supported mechanical automations.