A passionate photographer since her 14th birthday, she loves macro, butterflies, instant cameras and taking pictures of people at events. Adding the included petal-shaped lens hood adds about an inch and a half (40 millimeters) of length.

However, when photographing a black and white test chart, you do get a slight colour tint as a result of magenta fringing removal. This means that the speed at which you turn the ring doesn’t affect how quickly you travel from infinity to the minimum focus distance.As with any fast aperture prime, it is worth looking at the quality of the background blur or “bokeh” as it is more commonly referred to. As this use would probably involve mounting the camera on a tripod, there would be no issue with accidental shifting of the focus point. Over the years, many of their lenses have been made out of this material, and generally, it’s shown to be long-lasting, scratch resistant, and strong. The optical design and stepping motor deliver smooth autofocus during video shooting, while the mount features special sealing creating a dust- and splash-proof design.

That being said, there are, of course, no focus scale or distance engravings, so you’ll be entirely reliant on in-camera focus assists such as peaking. An experienced lens manufacturer offering a diverse range of interchangeable lenses, SIGMA provides the innovative Mount Conversion Service, in which we change the mount of a lens in one of our new product lines to another mount of your choice (charges apply). the bokeh balls of the Sigma lens start to take on the shape of the 9 blade aperture whereas those of the Olympus remain quite round. Tested on Canon EOS M5 and M50 cameras, we found autofocus to be speedy and highly accurate for stills, while enabling smooth autofocus transitions during movie capture. Despite featuring premium-grade all-metal housing, the 17mm lens is nearly four times lighter than the 16mm, with visibly more compact dimensions.It's built to the standard of other modern Sigma lenses, with a tough metal and polycarbonate barrel, a large rubberized manual focus ring, and protection from dust and splashes. Please be sure to use your camera body in combination with your X Mount lenses from SIGMA when updating the firmware. From Sigma lens literature) The SIGMA Corporation is pleased to announce the development of a new high-performance, large-diameter wide-angle lens, SIGMA 16mm F1.