Tamron 20mm F2.8 Di III OSD M1:2 lens for Sony E-mount. Full-frame compatible - Brand: TAMRON - Model: HF050 - Filter diameter: 67mm Purchased this spring, and I am selling it because I haven't had much opportunity to use it. It's clean as I've only used it 2 or 3 times. No original box or instruction manual. Thank you for looking. Focal length...19-70mm Open F value...2.1-2.8 Other features...Lens hood included, front lens cap included, rear lens cap included