Difference Between Nikkor AI and AIS

When it comes to camera lenses, Nikkor is a popular brand known for its high-quality lenses that deliver exceptional image quality. Two commonly used lens series by Nikkor are AI (Auto Indexing) and AIS (Auto Indexing with Micro), but what exactly sets them apart? In this article, we will explore the key differences between Nikkor AI and AIS lenses and understand their unique features and advantages.

Key Takeaways:

• AI stands for Auto Indexing, while AIS stands for Auto Indexing with Micro.
• Both AI and AIS lenses are compatible with Nikon F-mount cameras.
• AI lenses were introduced in the 1970s, while AIS lenses were introduced in the 1980s.
• AI lenses have a simpler construction compared to AIS lenses.

AI Lenses

Nikkor AI lenses were the first series to introduce the auto-indexing feature in their lenses, allowing the camera to communicate the aperture value to the lens. This convenience allowed photographers to utilize aperture-priority exposure mode, where the camera automatically selects the correct shutter speed based on the selected aperture. AI lenses have a straight aperture ring without any additional markings.

**An interesting fact about AI lenses is that they can be used on both manual focus and auto-focus Nikon cameras, providing flexibility to photographers.**

AIS Lenses

Nikkor AIS lenses, which succeeded the AI series, built upon the foundation of AI lenses and added the micro feature. The “micro” stands for a close-up correction mechanism, which improved the lens’s capability to capture sharp images at close focusing distances. AIS lenses have an extended knurled focus ring and an extra aperture ring dial with half-stop increment markings.

*Interestingly, AIS lenses are backward compatible with older Nikon cameras (pre-AI), allowing photographers to use them on vintage film cameras.*

Comparison Table 1: AI Lenses vs. AIS Lenses

Comparison Table 2: Compatibility

Comparison Table 3: Availability

Final Thoughts

In summary, the key difference between Nikkor AI and AIS lenses lies in the addition of the micro feature in AIS lenses, allowing improved close focusing capabilities. While both AI and AIS lenses provide auto-indexing functionality, AIS lenses have a more advanced construction with additional aperture ring options and compatibility with vintage film cameras. Ultimately, the choice between AI and AIS lenses depends on individual photographer preferences and specific shooting requirements.

Common Misconceptions

1. AI and AIS lenses are the same

One common misconception is that Nikkor AI (Auto Indexing) and AIS (Auto Indexing Shutter) lenses are the same. While they may sound similar, there are important differences between the two.

• AI lenses have a smaller set of electronic contacts compared to AIS lenses.
• AIS lenses have additional mechanical linkage to enable the camera to read the aperture information.
• AI lenses generally lack certain advanced features found in AIS lenses.

2. AI lenses cannot be used on modern DSLR cameras

Many people believe that AI lenses are not compatible with modern DSLR cameras because they lack autofocus capabilities. However, this is a misconception.

• AI lenses can still be used on modern DSLR cameras in manual focus mode.
• Adapters are available that allow AI lenses to be used on DSLRs with an increased range of functionality.
• While AI lenses may require manual focusing, they can produce high-quality images on modern digital cameras.

3. AIS lenses are superior in image quality compared to AI lenses

It is often mistakenly believed that AIS lenses are superior to AI lenses in terms of image quality. However, this is not necessarily true.

• Both AI and AIS lenses are capable of producing excellent image quality.
• The difference in image quality is more dependent on factors such as lens design, optics, and individual lens quality rather than AI or AIS designation.
• There are AI lenses that can produce images just as sharp and clear as AIS lenses.

4. AI lenses lack metering capabilities

Another misconception is that AI lenses do not have metering capabilities. However, this is not entirely true.

• AI lenses can still use metering with manual and aperture priority modes.
• While AI lenses don’t provide full metering functionality in certain cameras, they can still utilize center-weighted or spot metering.
• The metering capabilities may vary depending on the camera model and compatibility with AI lenses.

5. AIS lenses are more expensive than AI lenses

Many people assume that AIS lenses are more expensive than AI lenses due to the added functionality. However, this is not always the case.

• The price of AI and AIS lenses can vary depending on factors such as rarity, condition, and desirability.
• In some cases, AI lenses with specific features or in pristine condition can be more expensive than certain AIS lenses.
• The cost difference between AI and AIS lenses can also depend on the availability and demand in the market.

The Popularity of Nikkor AI and AIS Lenses

In the world of photography, Nikon is known for producing high-quality lenses that capture exceptional images. Two popular lens series from Nikon are the Nikkor AI and AIS lenses. These lenses have their own unique features and benefits that cater to photographers with different needs. The following data and information provide a comprehensive comparison between the Nikkor AI and AIS lenses, allowing photographers to make an informed decision based on their specific requirements.

Lens Compatibility

The compatibility of a lens determines its adaptability to different camera bodies. Here we present the percentage of Nikon camera models compatible with both AI and AIS lenses:

Aperture Adjustment Range

The aperture adjustment range determines the flexibility and control photographers have over the amount of light entering the camera. The wider the range, the more options one has when capturing an image in different lighting conditions.

Number of Available Focal Lengths

The availability of different focal lengths allows photographers to experiment and capture images in various styles and perspectives. Here’s a comparison between the number of focal lengths available in AI and AIS lenses:

Build Quality

The build quality of a lens determines its durability and resistance to external factors such as dust and moisture. It is an essential aspect to consider, especially for photographers working in harsh environments.

Autofocus Capability

Autofocus lenses offer the convenience of rapidly achieving sharp focus, especially when photographing moving subjects. Here’s a comparison of autofocus capabilities:

Price Range

The price range of a lens is a significant consideration for many photographers. Here, we provide an overview of the approximate price ranges for AI and AIS lenses:

Lens Sharpness

The sharpness of a lens significantly impacts the image quality. Here we compare the sharpness ratings of AI and AIS lenses on a scale of 1 to 10:

Lens Weight

The weight of a lens, especially for photographers who shoot for extended periods, can be an important factor to consider. Here’s a comparison between the weights of AI and AIS lenses:

Image Distortion

Image distortion refers to the deviation from the true proportions of photographed subjects. Higher image distortion can affect the overall quality and accuracy of an image. Here we compare the image distortion ratings for AI and AIS lenses on a scale of 1 to 10:

In conclusion, the choice between Nikkor AI and AIS lenses ultimately depends on the specific needs and preferences of the photographer. AIS lenses generally offer improvements in areas such as build quality, focusing capabilities, overall image quality, and reduced image distortion. However, AI lenses provide a more affordable entry point for beginners while still delivering solid performance. Understanding the nuances and differences between these two lens series is vital for photographers to make the best choice that suits their individual shooting styles and budget constraints.

Frequently Asked Questions

What is the difference between Nikkor AI and AIS lenses?

Nikkor AI (Automatic Indexing) and AIS (Automatic Indexing Shutter) are two lens series manufactured by Nikon. The primary difference between these two series is the inclusion of an Automatic Indexing aperture system in AIS lenses, which allows the camera to control the aperture electronically. AI lenses, on the other hand, require manual aperture adjustment.

Can AI lenses be used on AIS cameras?

Yes, AI lenses can be used on AIS cameras. However, since AI lenses lack the Automatic Indexing aperture system, the aperture needs to be set manually. This means that you will have to adjust the aperture using the aperture ring on the lens instead of relying on the camera’s electronic control.

Can AIS lenses be used on AI cameras?

Yes, AIS lenses can be used on AI cameras. AIS lenses are backward compatible with AI cameras, and the aperture can be controlled electronically by the camera. This allows for more convenient aperture adjustment compared to using AI lenses on AI cameras.

Are AI and AIS lenses compatible with modern Nikon DSLR cameras?

Yes, both AI and AIS lenses are compatible with modern Nikon DSLR cameras. However, it is important to note that AI and AIS lenses are manual-focus lenses, which means you will need to manually focus the lens when using them on DSLR cameras that lack autofocus capabilities.

Do AI and AIS lenses have different optical performance?

No, AI and AIS lenses do not have any significant differences in terms of optical performance. Both lens series provide excellent image quality and Nikon’s renowned optical characteristics. The main difference lies in the aperture control system, not the optical performance.

Can AI and AIS lenses be used on other camera brands?

AI and AIS lenses are designed specifically for Nikon cameras and may not be compatible with other camera brands. However, there are adapters available in the market that allow you to mount AI and AIS lenses on certain non-Nikon camera systems, but functionality may vary.

Do AI and AIS lenses have any advantages over each other?

The advantage of AIS lenses over AI lenses is the ability to control the aperture electronically, providing more convenience in certain shooting situations. AI lenses, on the other hand, may be preferable for photographers who prefer manual aperture control or use older Nikon film cameras that lack electronic aperture control functionality.

Can AI and AIS lenses be used on Nikon film cameras?

Yes, both AI and AIS lenses can be used on Nikon film cameras. These lenses were originally developed for Nikon film cameras, and they are fully compatible with most Nikon film camera models. However, older Nikon film cameras may lack electronic aperture control, requiring manual aperture adjustment even when using AIS lenses.

What are some common AI and AIS lens models?

Some popular AI lens models include the Nikkor 50mm f/1.4 AI, Nikkor 24mm f/2.8 AI, and Nikkor 105mm f/2.5 AI. Common AIS lens models include the Nikkor 35mm f/2 AIS, Nikkor 85mm f/1.4 AIS, and Nikkor 180mm f/2.8 AIS. These are just a few examples, and Nikon has produced a wide range of AI and AIS lenses throughout the years.

Can AI and AIS lenses be converted to autofocus?

No, AI and AIS lenses cannot be converted to autofocus. These lenses lack the necessary autofocus motors and electronics required for autofocus functionality. If you require autofocus capabilities, you will need to consider Nikon’s autofocus lens series, such as AF, AF-S, or AF-P lenses.