Sigma 400mm f/5.6 APO

The Sigma 400mm f/5.6 APO is a high-quality camera glass that is suitable for full-frame cameras. It is a long-range photo lens that can capture distant subjects with great resolution. This photographic lens has a good build quality and is made with high-quality lens elements that are coated to reduce glare and improve image quality. The lens has a fixed aperture of f/5.6, which means it is not the best in low light conditions, but it can still produce great bokeh. The autofocus feature of this lens is fast and accurate, making it suitable for action photography. However, it also has a manual focus option for more precise focusing. The lens has a manufacturing time that ensures it is made with great attention to detail. Overall, the Sigma 400mm f/5.6 APO is a great option for photographers who need a high-quality ultra-telephoto lens.

Optical design

Not the best in low light conditions but the lack of high aperture can be compensated with higher iso Has 6 aperture blades, this number of blades are commonly used. Having rounded blades provides out of focus circle shape closer to a circle.

Physical characteristics

With a lens filter diameter of 72 mm you are one step from the next standard filter size, buy step-up ring and bigger filter but you can chose from plenty options. 212 mm long, with this size carry only if you use it. Weights 1100 grams so it is a heavy lens, consider using its own lens bag.