Our IRON GLASS Cine MIR-1V 37mm F 2.8 PL is an old Sowjet Lens rehoused by IRON GLASS. It features a metallic 0.8 gear for focus and aperture. Very well suitable for full frame format. See here what IRON GLASS writes about this lens: MIR-1V 37mm F2.8 is a very popular wide/mid-range lens. It’s closely based on Zeiss Flektogon equivalent. It’s a favourite lens of many thanks to its incredible flares. From the factory this lens has one big downside: the closest focusing distance of just 0.70m making it somewhat unusable for capturing proper close-ups, but we’ve improved the closest focusing distance to 0.57m as part of this rehousing, making it much more usable for close ups without compromising on image quality.