Tamron 20mm f/2.8 Di III OSD M 1:2

Although wide-angle prime is made for full-frame Sony E-mount mirrorless cameras, it may also be used with APS-C models because it has a focal length of 30mm.
A modestly bright f/2.8 maximum aperture achieves a compromise between being able to work in the lighting conditions that are available and producing a profile that is remarkably small and light.
This lens, which has a half life-size 1:2 maximum magnification and a minimum focussing distance of 4.3" to accommodate working at close range, is perfect for close-up photography.