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Canon EF 75- vs Canon RF100-

Updated July 2026 — Canon EF 75- wins on closest focus and weight, Canon RF100- wins on price and focal length.

The Canon RF100-400mm offers superior features and image quality, making it the better choice for serious photographers. The Canon EF 75-300mm is a budget-friendly option for casual users.

Why Canon EF 75- is better

Price

More affordable at $199.99

Weight

Lightweight at 16.8 ounces

Simplicity

Traditional design for casual use

Why Canon RF100- is better

Zoom Range

Wider range of 100-400mm

Image Stabilization

Optical IS with up to 5.5 stops

Autofocus

Faster Nano USM technology

Overall score

Canon EF 75-
65
Canon RF100-
85

Specifications

SpecCanon EF 75-Canon RF100-
Max Aperturef/4-5.6f/5.6-8
Image StabilizationNoYes
Autofocus TypeDC MotorNano USM
Max MagnificationN/A0.41x
Control RingNoYes

Dimension comparison

Canon EF 75-Canon RF100-

Overview of the Canon EF 75-300mm f/4-5.6 III Telephoto Zoom Lens

The Canon EF 75-300mm f/4-5.6 III Telephoto Zoom Lens is priced at $199.99, making it a budget-friendly option for photographers seeking to capture distant subjects. This lens is designed for Canon SLR cameras and is particularly noted for its versatility in various shooting scenarios, from sports to wildlife photography. With a focal length range of 75-300mm, it allows users to zoom in on far-off action or create intimate portraits. Its lightweight design at 16.8 ounces ensures portability, while the 4.9-foot closest focusing distance enables detailed close-ups.

Overview of the Canon RF100-400mm F5.6-8 IS USM

The Canon RF100-400mm F5.6-8 IS USM is a more advanced lens priced at $699.00, making it about 250% more expensive than the EF 75-300mm. This lens is designed for EOS R series cameras and offers a broader zoom range of 100-400mm, allowing for even more versatility in capturing distant subjects. It features Optical Image Stabilization, which provides up to 5.5 stops of shake correction, enhancing image clarity during handheld shooting. Compact and lightweight, this lens weighs similarly to the EF 75-300mm, making it an excellent choice for travel and wildlife photography.

Image Quality: Canon EF 75-300mm vs. Canon RF100-400mm

In terms of image quality, the Canon RF100-400mm clearly outshines the Canon EF 75-300mm, thanks to its advanced optical design. The RF100-400mm incorporates a single Ultra Low Dispersion lens element, which effectively corrects chromatic aberration throughout its zoom range, ensuring crisp and colorful images. While the EF 75-300mm delivers decent image quality for its price, it lacks such advanced features, which may impact the sharpness and color accuracy of images, especially at longer focal lengths.

Autofocus Performance

The autofocus performance of the Canon RF100-400mm is superior due to its Nano USM technology, which provides high-speed, smooth, and quiet focusing. This is particularly beneficial for capturing fast-moving subjects in wildlife and sports photography. In contrast, the Canon EF 75-300mm relies on a DC motor for autofocus, which may not offer the same level of speed and precision as the RF100-400mm. This difference in autofocus technology can significantly affect the user experience, particularly for those who prioritize quick and accurate focusing.

Versatility and Use Cases

The Canon RF100-400mm excels in versatility, making it ideal for a range of photography styles, including wildlife, sports, and travel. Its extended zoom range allows for more creative framing options and the ability to capture subjects from a greater distance. The EF 75-300mm, while versatile, has limitations in its focal range and lacks advanced stabilization features, making it less suitable for high-action scenarios. Photographers looking for a one-lens solution may find the RF100-400mm more appealing due to its broader capabilities.

Build Quality and Design

Both lenses exhibit a solid build quality, but the design philosophies cater to different user needs. The Canon EF 75-300mm is a more traditional lens, focusing on simplicity and affordability, while the RF100-400mm features a modern design that incorporates a control ring for quick adjustments, enhancing user convenience. The compact and lightweight design of both lenses makes them suitable for extended shooting sessions, but the RF100-400mm's features provide additional control, which can be crucial in dynamic shooting environments.

Price Comparison and Value

With the EF 75-300mm priced at $199.99 and the RF100-400mm at $699.00, there is a significant price difference of about $499.01. This makes the EF 75-300mm a compelling choice for budget-conscious photographers or those just starting in telephoto photography. However, the RF100-400mm justifies its higher price point through its advanced features, such as superior image stabilization and autofocus technology, which may appeal to more serious photographers looking for enhanced performance and image quality.

Which should you buy?

Choosing between the Canon EF 75-300mm f/4-5.6 III Telephoto Zoom Lens and the Canon RF100-400mm F5.6-8 IS USM ultimately depends on your budget and photographic needs. The EF 75-300mm is a solid option for those seeking an affordable lens for casual photography, offering good performance without breaking the bank. However, if you are a more serious photographer who values advanced features, higher image quality, and versatility, the RF100-400mm is worth the investment. Its superior autofocus, image stabilization, and broader focal range make it a more capable tool for capturing stunning images in various situations.