Understanding Autofocus Motors in Nikon Lenses: Can Older Nikkor Lenses Support AF Functionality?
Nikon has evolved significantly over the years, introducing several generations of lenses and camera bodies equipped with advanced autofocus (AF) technology. However, it's common for photographers to wonder about the compatibility and functionality of autofocus (AF) in older lenses when paired with newer bodies, or vice versa. This article explores the nuances of AF-S and AF-D lenses, focusing on the specific case of the Nikon AF-S DX Nikkor 55-200mm f/4-5.6G ED VR II lens and its compatibility with older Nikon body models, such as the D3000 and D5000 series.
AF-S vs. AF-D
Nikon introduced the AF-S (Autofocus-Silent Wave Motor) and AF-D (Autofocus Drive) systems as distinct lineups, each designed for specific purposes and camera models. Understanding these differences is crucial for determining the capabilities and limitations of your lenses and camera bodies.
AF-S Lenses: These lenses were designed for use with Nikon DSLRs that feature built-in AF motors. AF-S lenses provide excellent auto-focusing performance and are compatible with the motor-driven autofocus systems of Nikon’s D series cameras. This means that when you use an AF-S lens with a modern D series camera, both the lens and camera can utilize the internal AF motor for sharp, quick focusing.
AF-D Lenses: On the other hand, AF-D lenses were primarily designed for use with legacy Nikon bodies that do not have internal AF motors. These lenses rely on the camera body’s AF drive to achieve focus. This means that when you use an AF-D lens with a modern camera, it still relies on the body’s motor for AF functionality, which may result in a less smooth and responsive focus.
The Nikon AF-S DX Nikkor 55-200mm f/4-5.6G ED VR II Lens
The Nikon AF-S DX Nikkor 55-200mm f/4-5.6G ED VR II lens is a popular and versatile telephoto zoom lens designed to work with APS-C (DX) format cameras. This lens features a built-in silent wave motor, which works seamlessly with AF-S equipped cameras. However, as an AF-S lens, it is not designed to be used with older Nikon bodies that lack internal AF motors.
Compatibility with Older Nikon Bodies: The Nikon D3000 and D5000 series cameras, introduced before the widespread adoption of the AF-S system, do not support the internal motors needed to activate the AF-S lens’s auto-focusing capabilities. Therefore, while the lens is fully functional on these bodies, auto-focusing will not benefit from the lens’s built-in motor. Instead, the camera will use its own motors or even attempt to focus without assistance.
Options for AF Functionality with Older Nikon Bodies
For photographers who desire autofocus capabilities with their older Nikon bodies, there are a few solutions available:
Manual Focus Conversion: Some users choose to manually focus the lens and achieve the desired sharpness. This is a good option for still photography but may not be ideal for capturing fast-moving subjects or for action photography. Upgrade to AF-S Bodies: A more practical solution for those who frequently use the lens for auto-focusing is to upgrade to newer Nikon DSLR models that support AF-S lenses. This will allow both the camera body and lens to work together for well-coordinated and responsive focusing. Externally Powered AF Motor: Technically, it is possible to add an external autofocus motor to an older lens, but this rarely happens due to the complexity and cost. Additionally, such modifications often void the warranty on both the lens and the body.Conclusion and Best Practices
In summary, the Nikon AF-S DX Nikkor 55-200mm f/4-5.6G ED VR II lens is an excellent choice for modern Nikon DSLRs, where the built-in autofocus motor can be fully utilized. However, for photographers who own or prefer older Nikon bodies without internal AF motors, the lens can still be used but autofocus will not be as efficient.
Photographers should carefully consider the need for advanced autofocus features when choosing lenses and camera bodies. Upgrading to AF-S lenses and corresponding bodies will offer the best performance for today’s photography needs. If budget or other considerations prevent upgrading the body, using the lens in manual focus mode or manual exposure mode might still provide satisfactory results for specific photography purposes.