---This 24mm f/1.8 lens is designed for full-frame format Sony E-mount mirrorless cameras and provides a 36mm equivalent focal length when used on APS-C-format cameras. ---Bright f/1.8 maximum aperture is ideal for working in low-light conditions and offers greater control over depth of field and focus position for selective focus applications. ---Two extra-low dispersion elements, two aspherical elements, and three high refractive index elements are incorporated within the lens design and help to control chromatic aberrations as well as reduce color fringing for sharper, clearer imagery. ---An Ultra Multi-Coating has been applied to all lens elements to suppress lens flare and ghosting for increased contrast and color accuracy. ---The Linear STM autofocus motor and internal focus design maintains the overall length of the lens during use.
Good value with excellent fast aperture performance.
So much creativity is unlocked with a f1.8 lens. Depth of focus control, low light possibilities, and in a small package. My camera practically sees in the dark with this on, and it works great for astrophotography and nightscapes. I haven't tried the astrophotography mode, but it looks to be very helpful for quick focusing on stars. The included case fits the lens nicely.