Tamron's M111 series is optimized for 3.1-μm-pixel-pitch imagers, equivalent to 1.1” 12 mega-pixels, offer the highest contrast and resolution among Tamron’s machine vision fixed-focal lens line-up. Tamron’s proprietary optical design ensures identical high contrast and resolution for all four lenses (8mm, 16mm, 25mm, 50mm) irrespective of focal length.