Understanding the Difference Between Nikon AF and AF-S Lenses

When it comes to Nikon lenses, the main distinguishing factor is the type of autofocus (AF) and AF-S technologies. Each type offers unique advantages in terms of speed, sound, and compatibility. In this article, we will explore the differences between these two categories of lenses and help you choose the right one for your photography needs.

Overview of Nikon AF Lenses

Nikon AF lenses are among the older models in the lineup. These lenses are designed to work exclusively in manual focus mode, although they do offer an automatic focus option which is not as prevalent as in the AF-S series. The primary advantage of AF lenses is cost-effectiveness, as their focus mechanisms are simpler and lighter, allowing for smaller lens designs. However, they are not as convenient for modern photographers who rely heavily on autofocus.

Introduction to AF-S Lenses

Nikon AF-S lenses, on the other hand, have gained popularity over the years due to their advanced autofocus technologies. These lenses are equipped with a built-in focusing motor that ensures faster and quieter focusing, making them an ideal choice for modern photography. The addition of a built-in motor also means that AF-S lenses can work with a wider range of camera bodies, including those without an internal autofocus motor.

AF-S Lenses: Silent Wave Motor (SWM)

A key feature of AF-S lenses is the incorporation of Nikon's Silent Wave Motor (SWM) technology. SWM converts traveling waves into rotational energy, providing smoother and faster focusing. This technology not only enhances the speed and accuracy of focus but also minimizes the sound produced during focusing, making it particularly suitable for situations where noise should be minimized.

Compatibility and Use Cases

AF lenses are compatible with newer Nikon camera bodies that have built-in autofocus motors. These bodies include the 3000 and 5000 series, which can take advantage of the autofocus capabilities of the AF lenses. However, AF-S lenses offer superior performance due to their built-in motors. When used on a camera body that lacks an autofocus motor, AF-S lenses leverage their own motor, providing faster and more precise focusing. This feature is especially beneficial for photographers who need to operate in older or less advanced camera systems.

Performance and Speed

One key advantage of AF-S lenses is their speed and efficiency. The built-in focus motor ensures that focusing is both quick and quiet, reducing interference with the shooting process. In contrast, AF lenses rely on the camera body's autofocus motor, which can be slower and less precise. However, the AF-S motor is generally faster and more efficient, which can be crucial in fast-paced shooting situations or when precision is required.

Conclusion

Choosing between AF and AF-S Nikon lenses depends on your specific needs and the type of photography you pursue. AF lenses are a cost-effective option for those who are willing to manually focus or operate in camera systems with built-in motor coupling. AF-S lenses, with their built-in motors and advanced technologies, offer superior performance, speed, and sound management, making them ideal for both professional and enthusiast photographers. Whether you're a seasoned pro or a budding photographer, understanding the differences between these lens types can help you make an informed decision.

Key Points:

Nikon AF lenses are designed for manual and limited automatic focus, suitable for older camera systems. Nikon AF-S lenses include a built-in autofocus motor and advanced focusing technology, providing faster and quieter operation. The Silent Wave Motor (SWM) in AF-S lenses converts traveling waves into rotational energy, enhancing focusing performance. Compatibility is a key factor, with AF-S lenses offering superior performance across a wider range of camera bodies. AF-S lenses are particularly useful for fast-paced or precision-driven photography.

For more detailed information and technical specifications, please refer to the official Nikon website or visit Nikkor AF vs. AF-S Lens for comprehensive comparisons.