The Secret Behind Nikon’s Second Aperture Scale (It’s Genius!)

Why do Nikon AI lenses have TWO aperture scales? In this video, we explore the hidden purpose behind the second set of aperture numbers found on Nikon AI and AI-S lenses—and how it ties into Nikon’s ADR (Aperture Direct Readout) system. You’ll learn: 📷 What ADR is and how it works 🔎 Why Nikon added the second scale 📸 How different Nikon film cameras like the F2AS, F3, F4, and F5 display aperture info 🛠️ How some lenses were AI-converted (and what to look for) 👁️ Why the F6 dropped ADR in favor of digital readouts Whether you're a Nikon enthusiast, film shooter, or vintage gear collector, this is a deep dive into one of Nikon’s most clever mechanical innovations. 👍 Like what you see? 📩 Leave a comment if you’ve noticed the second scale—or if you’re using AI lenses today! 🔔 Subscribe for more Nikon history and 35mm gear breakdowns. Photographic equipment that I often use: Nikon Z9: https://tinyurl.com/phototoolkitnikonz9 Nikon Z8: https://tinyurl.com/phototoolkitnikonz8 Nikon D850: https://tinyurl.com/phototoolkitnikon... Nikon F6: https://tinyurl.com/phototoolkitnikonF6 Nikon 14-24mm F2.8: https://tinyurl.com/phototoolkitnikon... Nikon 24-70mm F2.8: https://tinyurl.com/phototoolkitnikon... Nikon 70-200mm F2.8: https://tinyurl.com/phototoolkitnikon... Nikon 105mm F2.8 macro: https://tinyurl.com/phototoolkitnikon... Nikon 300mm F4 PF: https://tinyurl.com/phototoolkitnikon... Nikon 200-400 F4: https://tinyurl.com/phototoolkitnikon... Thanks for all your support. As an Amazon Associate I earn from qualifying purchases. If you are looking to learn about creative techniques, check out my playlist:    • Creative Control   Check out my playlist of Photography challenges:    • Photography Challenges   I use all different types of cameras from Nikon film to digital, Fujifilm GFX, Hasselblad Xpan, Polaroid, Mamyia TLRs and Instax Mini Evo. Check out my equipment playlist:    • Equipment Toolkit