TTartisan lens roadmap: first autofocus lens, 40mm f/2.8 macro lens, new M-mount lenses, and more - Photo Rumors
TTartisan teases a new 40mm F2.8 1:1 macro lens for APS-C mirrorless camera systems: Digital Photography Review
TTArtisan 40mm F2.8 1:1 Macro Review and Gallery - DustinAbbott.net
TTArtisan 40mm F2.8 Macro Lens for Fuji, Sony, M4/3 and Leica Cameras – Pergear
Amazon.com : TTArtisan 40mm F2.8 Macro Lens APS-C Macro Lens Manual Focus Prime Fixed Focus Lens for Sony E Mount Camera Sony A5000, A5100, A6000, A6100, A6300, A6400, A6500, A6600 : Electronics
Amazon.com : TTArtisan 40mm F2.8 Macro Lens APS-C 1:1 Magnification Macro Lens Manual Focus Prime Fixed Focus Lens for Nikon Z-Mount Camera Z6、Z7、Z50、Z5、Z6II、Z7II : Electronics