Sigma 18mm f/3.5 Zen

The Sigma 18mm f/3.5 Zen is a camera glass that offers a wide angle view for full frame cameras. It has autofocus capabilities and can be used for a variety of photography styles. The lens has a number of elements that help to produce high quality images with good resolution. The lens coating helps to reduce flare and ghosting, which can be common issues with photo lenses. The build quality of the lens is good and it is designed to last. The aperture of the lens is f/3.5, which is a good aperture for low light situations. The lens has a good bokeh, which means the out of focus areas of the image are pleasing to the eye. The lens can be used in manual focus mode as well. The manufacturing time for the lens is not mentioned. There are alternatives to this lens on the market, but the Sigma 18mm f/3.5 Zen is a good choice for those who want a high quality wide angle lens.

Optical design

Has 6 aperture blades, this number of blades are commonly used. Having rounded blades provides out of focus circle shape closer to a circle. Average brightness in this league

Physical characteristics

57 mm long, this small lens should be always in the camera bag. Weights 354 grams so plan ahead, carry only if really necessary. 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.