Step-Up Adapter M37-M46 ƒ/N Max_ƒ/1.8 75 Minimum Object Distance 100

75 Minimum Object Distance 100 mm Front Diameter 51 mm Focus Control Manual Iris Control Manual Flange Back in Air 17

7 mm Angle of View @ 2/3″ 57

45 μm Weight 295 Grams Mount C-Mount Filter Thread M49-0

HF1618-12M suggested replacement is CF16ZA-1S

Step-Up Adapter M37-M46 ƒ/N Max_ƒ/1.8 75 Minimum Object Distance 100Step Up Rings by Midwest Optical Systems (MidOpt) Use larger diameter filters on lenses with smaller diameter filter threads Often mandatory for shorter focal length lenses in order to prevent vignetting Available sizes: SU22. 5 25. 5 SU77 105 Commonly referred to as a thread adapter Step Up Rings are most commonly used to adapt a larger diameter thread on items such as ring lights and filters to a smaller diameter thread (generally the thread on the