How do I know if my Nikon lens is AI?
You can tell if a lens is AIS when:
- The minimum aperture (both the main larger and smaller direct read out figures) are marked in orange i.e. F16,
- A notch has been taken off the rear bayonet mount, above the lens locking notch. This allows certain Nikon cameras to detect if an Ais lens is fitted or not.
What is non CPU lens on Nikon?
Non-CPU NIKKOR lenses refer to the early generations of NIKKOR lenses which were developed for Nikon film cameras, during the days where camera technology was still very basic, and photographers were manually controlling all the functions of the lens and camera to acquire optimal exposure and picture composition.
How do you use a non AI lens on a Nikon FE?
Press the DOF preview lever to meter. With the AI follower flipped up to allow non-AI lenses to mount, the camera can’t tell what your aperture is set to, so you have to stop down to get accurate metering.
What does Nikon AIS mean?
The Ai-type Nikkor lens was introduced during 1977, and was the first major change to the famous Nikon F mount since it was launched in 1959. The designation is derived from the name of the method used to couple the lens with the TTL metering system of compatible Nikon cameras, which is known as Aperture Indexing (Ai).
What is the difference between Nikkor AI and AiS?
Ai lenses have only ONE set of aperture values on them, while AiS lenses have two sets of aperture numbers….a big-sized set, and behind them and closer to the body is a smaller,secondary set of numbers called the ADP or Aperture DIrect Readout set….
How do I know if my Nikon lens is AI or AiS?
In 1981, Nikon Introduced the AI-S (Automatic Aperture Indexing Shutter) lens. A quick way to tell if a lens is AI-S is by the (Lens Type Signal) notch carved out of the metal bayonet ring. The AI-S lenses had standardized aperture control and a Focal Length Indexing Ridge.
What is Stopdown metering?
Stop-down metering is a technique used in TTL systems where light measurements are made through the lens, set at the taking aperture. Many cameras with open-aperture metering still feature a stop-down metering mode – to allow for lenses or accessories without coupling.
How can you tell if a lens is AI or AiS?
Besides the “speed notch” that AiS lenses have on the chromed area of the mounting side of the lens, one of the easiest ways to differentiate between an Ai lens and an AiS lens is to look at the aperture ring area.