The Sigma 105mm F1.4 DG HSM Art lens for Canon EF mount is an exceptional piece of glass that is designed for those who demand both high performance and artistic quality in their photography. This prime lens excels in portrait photography, offering a stunning background blur (bokeh) that complements the subject beautifully. With its wide aperture of F1.4, this lens allows for excellent low-light performance and the ability to create shallow depth of field images that separate the subject from the background.
The optical construction of the Sigma 105mm Art lens comprises 15 elements in 11 groups, which includes three SLD (Special Low Dispersion) glass elements that significantly reduce chromatic aberration and boost contrast. This design ensures that images are sharp, with impressive color rendition and clarity. The lens also features a Hypersonic Motor (HSM) for fast and silent autofocus, making it suitable for both still and video shooting.
However, this not-so-compact lens does come with some weight, tipping the scales at around 1,320 grams (approximately 2.9 lbs), which may not be the best choice for those looking for a lightweight travel companion. The larger size might also make it challenging to balance with smaller camera bodies. Additionally, while the HSM autofocus is generally reliable, there could be instances where the focusing might feel slower or less responsive, particularly in low-light situations.
The build quality of the Sigma 105mm is superb. It has a robust weather-resistant construction that makes it suitable for various shooting conditions, ensuring that you can capture those stunning portraits without worrying about the elements. The lens also features a nine-blade rounded diaphragm, which contributes to a pleasing out-of-focus area, further enhancing portrait photography.
The Sigma 105mm F1.4 DG HSM Art lens for Canon EF is a top-tier choice for portrait photographers seeking outstanding optical performance and artistic control over their images. While its weight and size may pose challenges for some, the exceptional image quality, beautiful bokeh, and solid build make it a worthy investment for serious photographers. If you can manage the heft, this lens is sure to elevate your portrait work to new heights.