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S erounder vs Canon RF 75-

Updated July 2026 — full head-to-head comparison.

Overview of the Products

The 37mm 0.25X Super Fisheye Lens Additional Lens is priced at $52.35, while the Canon RF 75-300mm f/4-5.6 Lens comes in at $253.95, making the fisheye lens about 79% cheaper than the Canon option. Both products cater to different photography needs, with the fisheye lens designed for wide-angle and macro photography, while the Canon lens offers versatile telephoto capabilities suitable for sports, wildlife, and everyday photography.

Intended Use

The 37mm 0.25X Super Fisheye Lens is primarily aimed at photographers looking for a unique perspective with its fisheye effect. It is particularly useful for specific shooting angles and macro close-up photography, as it can be divided into two parts for enhanced magnification. In contrast, the Canon RF 75-300mm lens is built for versatility, featuring a zoom range that makes it ideal for capturing distant subjects in various conditions. This feature makes it a great choice for wildlife and sports photographers who need to switch between different focal lengths swiftly.

Design and Build Quality

In terms of construction, the 37mm 0.25X Super Fisheye Lens is crafted from high-quality aluminum alloy and optical glass, ensuring durability while remaining lightweight at approximately 228 grams. The lens also includes a storage bag for easy transport. On the other hand, the Canon RF 75-300mm lens is designed to be lightweight as well, weighing just over 1 lb, which enhances its portability. However, it doesn't specify its material, though Canon lenses are generally known for robust build quality. Both lenses prioritize ease of use and transport, which is essential for photographers on the go.

Optical Features

The optical characteristics of these lenses cater to different photography styles. The 37mm 0.25X Super Fisheye Lens offers a fisheye effect with a 0.25X magnification, which is excellent for creative photography that requires wide angles and dramatic perspectives. In contrast, the Canon RF 75-300mm lens boasts a versatile focal length of 75-300mm, equivalent to 120-480mm on APS-C cameras. This range allows for a broad application in various photographic settings, enhancing its usability for capturing subjects at a distance while ensuring clarity and sharpness through Canon’s Super Spectra Coating.

Performance in Various Conditions

When it comes to performance, the 37mm 0.25X Super Fisheye Lens excels in special shooting scenarios where a unique perspective is needed. However, it may not perform well in all lighting conditions due to its design. The Canon RF 75-300mm lens, on the other hand, is optimized for sharpness and clarity, making it suitable for a range of lighting situations, including bright or backlit environments. Its variable f/4-5.6 aperture balances reach and portability while allowing for a pleasing bokeh effect, which is crucial for portrait work.

Accessories and Bundles

The 37mm 0.25X Super Fisheye Lens comes with a storage bag and a dust removal cloth, making it practical for photographers who want to keep their gear safe and clean. In contrast, the Canon RF 75-300mm lens is bundled with a shoulder bag and a 64GB UHS-I SDXC memory card, adding extra value for users who may need these accessories for their photography endeavors. The inclusion of a memory card is particularly beneficial for those planning to shoot high volumes of images, making the Canon lens package more appealing to some buyers.

Price Comparison

The price difference between the two lenses is significant, with the Canon RF 75-300mm lens costing $253.95, which is $201.60 more than the 37mm 0.25X Super Fisheye Lens. This substantial difference reflects the varying capabilities and target markets of the lenses. The fisheye lens is a niche product designed for specific artistic effects, while the Canon lens offers broader functionality and is suitable for a wide range of photography styles. For budget-conscious photographers or those just starting, the fisheye lens presents a compelling option.

Which should you buy?

Choosing between the 37mm 0.25X Super Fisheye Lens and the Canon RF 75-300mm lens ultimately depends on your photography needs. If you are looking for a specialized lens that allows for creative wide-angle shots and macro photography at a low price, the 37mm 0.25X Super Fisheye Lens is an excellent choice. However, if you require a versatile telephoto lens for general photography, sports, or wildlife with superior optical performance, the Canon RF 75-300mm f/4-5.6 lens is worth the investment. Consider what type of photography you engage in most frequently to make the best decision for your needs.