Sigma 20mm 1.4 Review & Field test

Are you looking for a high-quality wide-angle lens for your photography needs? Look no further than the Sigma 20mm 1.4 lens. With its bright aperture of f/1.4, this lens allows for excellent low light performance and beautiful background blur, making it a versatile option for a wide range of shooting situations. In this blog post, we will provide you with a detailed review and field test of the Sigma 20mm 1.4 lens, showcasing its performance in real-world shooting scenarios. If you’re considering adding this lens to your gear collection, read on to learn more about its features and capabilities.

Sigma 20mm 1.4 Review & Field Test

Sigma 20mm 1.4 Review & Field Test


The Sigma 20mm 1.4 lens is a wide-angle prime lens designed for DSLR cameras. It offers a wide aperture of f/1.4 which allows for excellent low-light performance and beautiful bokeh effects. The lens is part of Sigma’s Art series, known for its high-quality optics and build.


The Sigma 20mm 1.4 lens features a wide focal length of 20mm, ideal for capturing landscapes, architecture, and astrophotography. The fast f/1.4 aperture makes it a versatile lens for low-light shooting and creative depth of field effects. The lens also boasts superior optical performance with minimal distortion and chromatic aberration.

Build Quality

The lens is well-built with a solid metal construction that is both durable and weather-sealed. It feels robust in hand and can withstand the rigors of professional use. The focus ring is smooth and precise, allowing for easy manual focusing when needed.

Image Quality

The Sigma 20mm 1.4 lens produces sharp images with excellent contrast and color rendition. The wide aperture creates a beautiful bokeh effect, making subjects pop against a creamy background. The lens is also sharp across the frame, even when shooting wide open at f/1.4.

Field Test

During a field test of the Sigma 20mm 1.4 lens, the photographer found that the lens performed exceptionally well in various shooting conditions. In low-light situations, the wide aperture allowed for faster shutter speeds without sacrificing image quality. The lens captured stunning landscape shots with crisp details and vivid colors.

Low-Light Performance

The wide f/1.4 aperture of the lens proved to be a game-changer in low-light conditions. The photographer was able to capture sharp images with minimal noise, even in dimly lit environments. The lens excelled in astrophotography, capturing clear starry skies with pinpoint accuracy.

Bokeh Effect

The Sigma 20mm 1.4 lens produced a beautiful bokeh effect with smooth and creamy backgrounds. Subjects were separated effectively from the background, creating visually stunning images with a three-dimensional feel. The wide aperture allowed for creative depth of field effects, adding a cinematic quality to the photos.

Sharpness and Distortion

Even when shooting wide open at f/1.4, the lens exhibited impressive sharpness across the frame. There was minimal distortion and chromatic aberration, resulting in images that were true to life. The lens performed admirably in capturing fine details and textures, making it ideal for architectural and landscape photography.


The Sigma 20mm 1.4 lens is a versatile and high-performing wide-angle prime lens that excels in various shooting situations. With its wide f/1.4 aperture, superior optical quality, and robust build, it is a valuable addition to any photographer’s kit. Whether shooting landscapes, astrophotography, or portraits, the Sigma 20mm 1.4 lens delivers outstanding results with impeccable sharpness and beautiful bokeh.

FAQ – Sigma 20mm 1.4 Review & Field Test

Is the Sigma 20mm 1.4 a good lens for low light photography?

Yes, the Sigma 20mm 1.4 is a fantastic lens for low light photography. With its wide maximum aperture of f/1.4, it allows for great light-gathering capabilities, producing sharp and clear images even in dimly lit conditions.

How does the Sigma 20mm 1.4 perform for astrophotography?

The Sigma 20mm 1.4 is highly recommended for astrophotography due to its fast aperture and sharpness. It can capture stunning shots of the night sky, stars, and Milky Way with great detail and minimal distortion.

Is the Sigma 20mm 1.4 a good lens for landscape photography?

Absolutely! The wide angle of the Sigma 20mm 1.4 allows for expansive landscape shots with great depth and perspective. Its sharpness and color rendition make it a popular choice among landscape photographers.

How does the autofocus perform on the Sigma 20mm 1.4?

The autofocus on the Sigma 20mm 1.4 is fast and accurate, making it a reliable choice for capturing moving subjects or quick action shots. The silent and smooth autofocus motor ensures quiet operation, which is great for video recording.

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