Samyang 20mm T/ 1.9 ED AS UMC

The lens consists of 13 glass elements in 12 groups, which is a high-quality optical construction. The lens coating is UMC which stands for Ultra Multi Coating, this helps reduce ghosting and flare. The lens has a wide maximum aperture of T/1.9, which allows for a shallow depth of field and great low-light performance. The build quality of the lens is good, it is made of high-quality materials and feels sturdy. The lens produces sharp images with good resolution. There are alternative lenses available, but this lens is a good choice for those who want a wide angle lens with a fast aperture and manual focus.

Optical design

Wide open, subjects located outside the depth of field are shown very blurred. Has 7 aperture blades, mid-grade lenses usually have this amount of blades. Having rounded blades provides out of focus circle shape closer to a circle.

Physical characteristics

With a lens filter diameter of 77 mm this lens deserves a good quality filter, this is commonly filter size, provides a range of filter options. 86 mm long, requires consideration if you want to carry in the camera bag. Weights 520 grams so plan ahead, carry only if really necessary.