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Canon RF28- vs Canon RF45mm F1.2 STM

Updated July 2026 — Canon RF28- leads on price and weight.

The Canon RF28-70mm F2.8 IS STM offers versatility and image stabilization, while the RF45mm F1.2 STM excels in low-light performance and portraiture. Choose based on your specific needs.

Why Canon RF28- is better

Versatility

RF28-70mm is a zoom lens, allowing for more framing options.

Image Stabilization

RF28-70mm includes image stabilization for clearer handheld shots.

Build Quality

RF28-70mm has weather-resistant construction suitable for harsh conditions.

Why Canon RF45mm F1.2 STM is better

Price

RF45mm is significantly cheaper at $469.

Low-Light Performance

RF45mm has a wider f/1.2 aperture for better low-light shooting.

Bokeh Quality

RF45mm provides superior background bokeh for portraits.

Overall score

Canon RF28-
85
Canon RF45mm F1.2 STM
75

Specifications

SpecCanon RF28-Canon RF45mm F1.2 STM
Focal Length28-70mm45mm
Aperturef/2.8f/1.2
Image StabilizationYesNo
Weight500g400g
Weather ResistantYesNo

Dimension comparison

Canon RF28-Canon RF45mm F1.2 STM

Price Comparison

When comparing prices, the Canon RF45mm F1.2 STM is significantly more economical, priced at $469.00, in contrast to the Canon RF28-70mm F2.8 IS STM, which costs $1,098.95. This makes the RF45mm about 57% cheaper than the RF28-70mm, appealing to those who prioritize cost without sacrificing quality. The substantial price difference suggests that buyers have a clear choice based on their budget, with the RF45mm being a more accessible option for many photographers and videographers.

Lens Type and Versatility

The Canon RF28-70mm F2.8 IS STM is a versatile mid-range zoom lens, while the Canon RF45mm F1.2 STM is a standard prime lens. The zoom capability of the RF28-70mm allows users to adjust their framing without changing lenses, providing flexibility in various shooting situations. It excels in both stills and video content creation, making it ideal for creators who require adaptability. In contrast, the RF45mm, with its fixed 45mm focal length, is best suited for portraits and lifestyle shots, offering exceptional low-light performance and beautiful background bokeh. This distinction in lens type highlights the different creative needs each lens caters to.

Aperture and Low-Light Performance

In terms of aperture, the RF45mm F1.2 STM boasts a wide f/1.2 aperture, allowing for faster shutter speeds in darker conditions. This feature makes it an excellent choice for low-light photography, providing stunning depth of field and subject isolation. On the other hand, the RF28-70mm maintains a constant f/2.8 aperture across its zoom range, which is also commendable but does not quite match the low-light capabilities of the RF45mm. Photographers looking to achieve the soft, three-dimensional look in their images may find the RF45mm more suitable for their artistic vision.

Build Quality and Design

Both lenses are designed with high-quality construction in mind. The Canon RF28-70mm F2.8 IS STM is described as lightweight and compact, making it a convenient everyday carry lens. Its weather-resistant construction is equivalent to that of Canon's L-series lenses, ensuring durability in harsh environments. In comparison, the RF45mm F1.2 STM features a large-diameter design that is compact for its aperture size, making it a relatively portable option for a prime lens. While both lenses are well-constructed, the RF28-70mm's weather resistance may appeal more to outdoor photographers who face challenging conditions.

Image Stabilization

The RF28-70mm F2.8 IS STM comes equipped with a newly designed Image Stabilization unit, which is a significant advantage for both still and video content creators. This feature helps to reduce camera shake, resulting in clearer images, especially when shooting handheld or in low-light situations. Conversely, the RF45mm does not mention any form of image stabilization, which may be a limitation for those who frequently shoot without a tripod. For users who prioritize video recording or action photography, the image stabilization offered by the RF28-70mm could be a deciding factor.

Optical Quality

Both lenses promise exceptional optical quality, but they do so in different ways. The RF28-70mm F2.8 IS STM uses two UD elements and two aspheric lenses to minimize chromatic aberration, ensuring edge-to-edge clarity throughout the zoom range. This design results in high image quality comparable to that of L-series lenses. The RF45mm F1.2 STM, meanwhile, employs a PMo aspheric lens to reduce aberrations, which is a notable first for Canon in a f/1.2 lens. Photographers focused on achieving the best optical performance will appreciate the specialized designs of both lenses, though the RF28-70mm may have a slight edge in versatility.

Target User and Use Case

The Canon RF28-70mm F2.8 IS STM is tailored for creators who seek a versatile lens that can handle a wide range of shooting scenarios. Its ability to switch between various focal lengths makes it suitable for everything from landscapes to portraits. In contrast, the RF45mm F1.2 STM is designed for users who specifically want to capture stunning portraits with beautiful bokeh and impressive low-light capabilities. As such, the choice between these lenses largely depends on the photographer's primary focus, whether it's versatility or specialized portraiture.

Which should you buy?

In summary, the choice between the Canon RF28-70mm F2.8 IS STM and the Canon RF45mm F1.2 STM hinges on your specific needs as a photographer or videographer. If you require a versatile lens with a zoom range and image stabilization for a variety of shooting conditions, the RF28-70mm is the better option, albeit at a higher price point of $1,098.95. However, if you are focused on portrait photography and low-light performance, the RF45mm offers exceptional quality at a more accessible price of $469. Ultimately, your decision should reflect your budget and photographic style.