Sigma 19mm F2.8 EX DN

{{Short description|Camera lens}}

{{Infobox photographic lens

|name = Sigma 19mm F2.8 EX DN

|image =Sigma 19mm F2.8 EX DN.jpg

|caption =

|maker = Sigma

|mount = Sony E-mount, Micro Four Thirds

|focusdrive = Stepper motor

|feat-ws = n

|feat-sbf =

|feat-is = n

|feat-ar = n

|feat-mfo = y

|feat-special =

|application = Landscape, Street

|type = p

|flength = 19mm

|flength-eq = 28.5mm

|image-format = APS-C

|aperture = {{f/}}2.8 - 22.0

|elements = 8

|groups = 6

|diaphragm = 7

|close-dist = {{convert|0.20|m|ft}}

|max-dist = Infinity

|max-mag = 0.135x

|max-diameter = {{convert|60.8|mm|in}}

|max-length = {{convert|45.7|mm|in}}

|weight = {{convert|140|g|lb}}

|filter = 46mm

|hood = LH520-03, Barrel-type

|case =

|av-horiz =

|av-vert =

|av-diag =

|start = 2012

|stop =

|replace =

|msrp = $199

}}

The Sigma 19mm F2.8 EX DN lens is a wide-angle prime lens for Sony E and Micro Four-Thirds mounts, announced by Sigma in January 2012. Along with the Sigma 30mm F2.8 EX DN, it was part of the first release of Sigma lenses for compact interchangeable lens cameras, and hence the inception of the "DN" line, created by Sigma to cater to these cameras,{{Cite web | url=https://blog.sigmaphoto.com/2012/new-dn-lenses/ |title = Sigma launches DN lens line with two F2.8 Primes|date = 10 January 2012}} an offering that in January 2013 was expanded with another lens, the Sigma 60mm f/2.8 DN Art.{{Cite web | url=https://www.dpreview.com/articles/7920380613/sigma-announces-60mm-f2-8-dn-lens-for-mirrorless-micro-four-thirds-and-sony-nex |title = Sigma announces 60mm F2.8 for mirrorless and redesigned 30mm F1.4 DC}}