Marshall Electronics V-5500 1/2" 5MP 3.9mm M12 Visible/IR Corrected Lens

What the V-5500 lens is

The Marshall Electronics V-5500 is a 1/2" 5MP M12-mount lens with a 3.9mm focal length and f/2 aperture. It is built for visible and IR-corrected imaging, making it suitable for day-and-night surveillance, machine vision, broadcasting and medical camera systems. High-quality glass optics sit in an anodised aluminium housing and the lens meets RoHS environmental standards.

Who this suits and who should look elsewhere

The lens suits integrators and engineers who need an M12-mount optic that delivers sharp, low-distortion images across a 1/2" sensor at 5MP resolution. It is not for buyers whose cameras use a larger sensor format, a different mount thread, or who require a longer focal length for narrow-field viewing. It also does not address applications demanding motorised zoom or auto-iris control.

Behaviour under sustained load

The MTF exceeds 70% at the centre field and 63% at the full field, indicating consistent sharpness from centre to corner during continuous operation. The all-glass, anodised-aluminium construction resists thermal drift and maintains focus stability over long recording sessions. IR correction keeps focus aligned when illumination shifts between visible and near-infrared without manual readjustment.