Yongnuo Yn 50mm F1.8 Af Lens Yn50mm Aperture Auto Focus Lense For Nikon D7100 D750 D5200 D3100 D3200 D810 D800 D700 D610 D600 - Camera Lenses - AliExpress
Cheap speed: Yongnuo YN 50mm f/1.8 lens for F-mount review (with Nikon 50mm f/1.8G comparison) - Nikon Rumors
YONGNUO YN50mm F1.8N Standard Prime Lens Large Aperture Auto Manual Focus AF MF for Nikon DSLR Cameras : Electronics - Amazon.com
Amazon.com : YONGNUO YN50mm F1.8S Lens, 50mm F1.8 Larege Aperture, APS-C Standard Prime E-Mount, Auto Manual Focus AF MF USB for Sony Cameras : Electronics