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Canon RF100mm F2.8 L Macro is USM Lens, Medium vs Canon RF45mm F1.2 STM

Updated July 2026 — Canon RF100mm F2.8 L Macro is USM Lens, Medium leads on price and focal length.

The Canon RF100mm F2.8 L Macro is ideal for macro photography, while the RF45mm F1.2 STM offers versatility and affordability.

Why Canon RF100mm F2.8 L Macro is USM Lens, Medium is better

Macro Capability

RF100mm offers 1.4x magnification for detailed close-ups.

Image Stabilization

RF100mm includes advanced optical image stabilization.

Specialized Features

RF100mm has Spherical Aberration Control Ring for creative bokeh.

Why Canon RF45mm F1.2 STM is better

Price

RF45mm is significantly more affordable at $469.

Versatility

RF45mm is suitable for a wider range of photography styles.

Compact Design

RF45mm is more portable and easier to handle.

Overall score

Canon RF100mm F2.8 L Macro is USM Lens, Medium
85
Canon RF45mm F1.2 STM
75

Specifications

SpecCanon RF100mm F2.8 L Macro is USM Lens, MediumCanon RF45mm F1.2 STM
Max Aperturef/2.8f/1.2
Image StabilizationYesNo
Autofocus SpeedFastFast
Bokeh ControlYesNo
Macro CapabilityYesNo

Dimension comparison

Canon RF100mm F2.8 L Macro is USM Lens, MediumCanon RF45mm F1.2 STM

Price Comparison

The Canon RF100mm F2.8 L Macro is USM Lens is significantly more expensive than the Canon RF45mm F1.2 STM, priced at $1248.95 compared to $469.00. This makes the RF100mm lens about 167% more expensive than the RF45mm. For photographers on a budget or those just starting out, the RF45mm presents a considerably more affordable option without sacrificing quality. The price difference might influence your decision depending on your specific needs and budget constraints.

Intended Use

The Canon RF100mm F2.8 L Macro is designed primarily for macro photography, offering a maximum magnification of 1.4x. This unique feature allows for highly detailed close-up shots, making it ideal for capturing intricate subjects like flowers or small objects. In contrast, the Canon RF45mm F1.2 STM is a standard prime lens that excels in various scenarios, especially portraits and lifestyle photography, due to its wide f/1.2 aperture. This versatility makes the RF45mm suitable for general use, while the RF100mm is more specialized.

Image Quality

Both lenses boast impressive image quality, but they cater to different photography styles. The RF100mm lens features a bright f/2.8 maximum aperture and advanced optical image stabilization, making it ideal for low-light conditions and ensuring sharp images even at close range. Its Spherical Aberration Control Ring also allows for creative adjustments in foreground and background bokeh. The RF45mm, on the other hand, offers an outstanding f/1.2 aperture that delivers excellent low-light performance and pronounced subject isolation, thanks to its ability to create a three-dimensional look. Depending on your preference for macro detail or general photography, each lens provides unique image quality advantages.

Build and Design

The Canon RF100mm F2.8 L Macro is built specifically for full-frame EOS R series cameras, reflecting high-quality construction typical of Canon's L-series lenses. It includes features like an optical image stabilizer, which is crucial for macro shooting. Meanwhile, the RF45mm F1.2 STM offers a compact design that incorporates a large-diameter mount and short back focus, making it easier to handle while maintaining a reasonable price point. Both lenses prioritize durability and ease of use, but the RF100mm is tailored more toward macro photography, while the RF45mm is designed for versatility and portability.

Autofocus Performance

Autofocus performance is a key consideration for both lenses. The RF100mm F2.8 L Macro features fast and precise autofocus, crucial for capturing fleeting moments in macro photography. Its autofocus capabilities are designed to excel in close-up scenarios, ensuring quick focus adjustments. Conversely, the RF45mm F1.2 STM also delivers fast autofocus, making it effective for a variety of shooting situations, including portraits and casual photography. Both lenses utilize Canon's advanced autofocus technologies, but the RF100mm may have the edge when it comes to macro-specific needs.

Bokeh and Aesthetic Appeal

The aesthetic appeal of images produced by each lens varies based on their design and intended use. The RF100mm F2.8 lens provides a unique Spherical Aberration Control Ring, allowing photographers to manipulate the bokeh's shape and character for artistic effects. This feature is particularly beneficial for portrait and macro photography, where creative background blur can enhance the overall composition. The RF45mm F1.2, with its large aperture, naturally produces beautifully soft bokeh that isolates subjects effectively from their backgrounds. Both lenses offer distinct bokeh characteristics, catering to different artistic preferences.

Compatibility and Use Cases

Compatibility is a critical factor when choosing between these two lenses. Both the RF100mm and RF45mm are compatible with Canon's EOS R series mirrorless cameras, ensuring that users of this system can benefit from either lens. The RF100mm is ideal for macro enthusiasts and professionals seeking to capture detailed close-ups, while the RF45mm serves as a versatile tool for everyday photography, from portraits to landscapes. Understanding your primary photography needs will help clarify which lens would serve you best.

Which should you buy?

Ultimately, the decision between the Canon RF100mm F2.8 L Macro is USM Lens and the Canon RF45mm F1.2 STM comes down to your photography style and budget. If you are a macro photography enthusiast looking for specialized features, the RF100mm is worth the higher investment at $1248.95. However, if you seek versatility, portability, and a more budget-friendly option, the RF45mm priced at $469.00 offers exceptional performance for various photography genres. Carefully consider your intended use, and choose the lens that aligns best with your creative vision.