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Canon 50mm 1.8 Vs Sigma 50mm 1.4 Art

When it comes to choosing the perfect lens for your photography needs, the Canon 50mm 1.8 and Sigma 50mm 1.4 Art are two popular contenders. Both lenses offer exceptional image quality and versatility, but they also have their own unique features and strengths. In this blog article, we will delve into a detailed and comprehensive comparison of these two lenses to help you make an informed decision.

Build and Design

Build And Design

The build and design of a lens play a crucial role in its overall performance and durability. The Canon 50mm 1.8 features a lightweight plastic construction, making it incredibly compact and portable. It weighs just around 130 grams, making it an ideal lens for on-the-go photography. On the other hand, the Sigma 50mm 1.4 Art boasts a robust and solid build, with a metal barrel that exudes a premium feel. The lens weighs approximately 815 grams, giving it a substantial and durable feel in hand. Both lenses have their own advantages and disadvantages in terms of build and design.


The Canon 50mm 1.8 has a simple and straightforward design, with a focus ring and a manual focus switch. The lightweight construction of the lens makes it easy to handle and carry around. The Sigma 50mm 1.4 Art, on the other hand, features a wider and more substantial barrel, providing a comfortable grip and better balance when attached to a camera body. The lens also has a smooth and responsive focus ring, allowing for precise manual focusing if desired.

Weather Sealing

In terms of weather sealing, the Canon 50mm 1.8 does not offer any protection against dust or moisture. This means that extra caution needs to be taken when shooting in adverse weather conditions. On the other hand, the Sigma 50mm 1.4 Art comes with a rubber gasket at the lens mount, offering some level of protection against dust and moisture. This feature makes the Sigma lens more suitable for outdoor photography in challenging weather conditions.

Physical Dimensions

The Canon 50mm 1.8 measures approximately 68 x 41 mm, making it one of the most compact lenses in its class. Its small size makes it easy to carry around and inconspicuous when shooting. The Sigma 50mm 1.4 Art, on the other hand, has larger physical dimensions, measuring approximately 85 x 100 mm. While it is larger and heavier than the Canon lens, it still remains manageable and comfortable to use for extended periods of time.

Image Quality and Sharpness

Image Quality And Sharpness

When it comes to image quality and sharpness, both the Canon 50mm 1.8 and Sigma 50mm 1.4 Art deliver exceptional results. The Canon lens produces sharp images with good contrast, especially when stopped down. The lens has a seven-blade aperture, which helps render pleasing bokeh in the out-of-focus areas of the image. The Sigma lens, on the other hand, is renowned for its outstanding sharpness even at wider apertures. It has a nine-blade aperture, which allows for smoother and more rounded bokeh. However, the Canon lens has a slight edge in terms of overall color rendition and contrast, providing images with more vibrant and punchy colors.

Resolution and Detail

Both lenses are capable of capturing high-resolution images with excellent detail. The Canon 50mm 1.8 produces sharp images with good edge-to-edge sharpness, especially when used at narrower apertures. The lens is optimized for APS-C sensor cameras, where it performs exceptionally well. The Sigma 50mm 1.4 Art, on the other hand, is designed for full-frame cameras, allowing it to take full advantage of the sensor’s capabilities. The lens is tack sharp even when used wide open, capturing intricate details with impressive clarity.

Color Rendition and Contrast

Color rendition and contrast are important aspects of image quality. The Canon 50mm 1.8 produces images with vibrant and saturated colors. The lens has good contrast, which helps in creating images with a pleasing visual impact. The Sigma 50mm 1.4 Art, known for its exceptional image quality, also delivers accurate and vivid colors. The lens has excellent contrast, resulting in images with a three-dimensional feel. The colors produced by the Sigma lens are often described as rich and lifelike.

Chromatic Aberration and Distortion

Chromatic aberration and distortion can often be present in images, especially when using lenses with wide apertures. The Canon 50mm 1.8 exhibits some chromatic aberration, especially when used wide open. However, this can easily be corrected in post-processing. The lens also has minimal distortion, ensuring straight lines are rendered accurately. The Sigma 50mm 1.4 Art, on the other hand, has excellent control over chromatic aberration, resulting in images with minimal color fringing. The lens also exhibits very little distortion, ensuring accurate and distortion-free images.

Autofocus Performance

Autofocus Performance

When it comes to autofocus performance, the Canon 50mm 1.8 is known for its fast and accurate autofocus capabilities, making it suitable for various shooting scenarios. The lens utilizes Canon’s Micro Motor technology, which delivers quick and precise autofocus. The autofocus motor is quiet, ensuring minimal disturbance when shooting in quiet environments. The Sigma 50mm 1.4 Art takes autofocus to a whole new level with its hypersonic motor (HSM) technology. The HSM motor provides lightning-fast and quiet autofocus performance, allowing for quick and accurate subject tracking. This makes the Sigma lens a preferred choice for photographers who require precise and rapid focusing, especially in fast-paced shooting situations.

Focus Speed and Accuracy

The Canon 50mm 1.8 has a respectable focus speed, capable of acquiring focus quickly in most situations. The lens performs well in well-lit environments, where it can lock onto subjects with ease. It also has good accuracy, ensuring that the focus is sharp and precise. The Sigma 50mm 1.4 Art, with its hypersonic motor (HSM), offers even faster focus speed compared to the Canon lens. The lens can acquire focus swiftly, even in low-light situations. The focus accuracy of the Sigma lens is also excellent, ensuring that your subjects are sharp and in focus.