Sigma DG A 105mm f/1.4 HSM

Sigma DG A 105mm f/1.4 HSM is a high-quality camera glass that is designed for professional photographers. It has a wide aperture of f/1.4 that allows for excellent bokeh effect and low-light performance. The lens has a focus mechanism that enables you to take sharp and clear photos. It has a fast and accurate autofocus system that makes it easy to capture moving subjects. The lens is made up of several lens elements that are coated to reduce reflections and flare. The lens is built with high-quality materials that make it durable and long-lasting. The lens has a high resolution that allows you to capture detailed and sharp images. The manufacturing time of the lens is not mentioned.

Sure, here’s an enriched review of the Sigma DG A 105mm f/1.4 HSM camera lens:

Positives:
– The Sigma DG A 105mm f/1.4 HSM is an exceptional lens with a solid build quality and premium feel
– Its focal length and maximum aperture of f/1.4 make it ideal for portrait, landscape, and low-light photography
– The bokeh from the lens is buttery-smooth and creamy, creating a beautiful separation between the subject and the background
– The autofocus system is quick and accurate, making it easy to capture sharp images of moving subjects
– Color rendering is excellent, producing vibrant and true-to-life colors
– There is little to no distortion in photos, even at the widest apertures.

Negatives:
– The lens is quite heavy, weighing in at close to 3 pounds, which may be an issue for some photographers who prefer lighter gear
– At its widest aperture of f/1.4, the lens can be prone to chromatic aberration, especially in high-contrast scenes.
– The lens is also quite expensive compared to others with similar maximum apertures

Conclusion:
Overall, the Sigma DG A 105mm f/1.4 HSM is a top-quality lens that delivers stunning images. Its exceptional build and image quality come at a premium price, but for those serious about photography, it is a worthwhile investment. The heavy weight and potential for chromatic aberration may be minor downsides, but the pros far outweigh the cons. I highly recommend this lens to photography enthusiasts who appreciate the value of a high-quality lens.

Optical design

It is a ring-type ultrasonic motor designed to provide quick and silent focusing. Wide open, subjects located outside the depth of field are shown very blurred. Has 9 aperture blades, with this amount of aperture blades you will be satisfied with the result.

Physical characteristics

With a lens filter diameter of 105 mm finding lens filters in this range can be expensive consider using Cokin P system if you really need one. Weights 1645 grams so it is a heavy lens, consider using its own lens bag. 131 mm long, with this size carry only if you use it.