Step-Up Adapter M62-M67 Image Circle Diameter_Not Specified 45 mm Distance Between Principle

45 mm Distance Between Principle Points -22

85 mm Distance Between Principle Points 49

16 mm Entrance Pupil Position -35

18 mm Chief Ray Angle 4

Step-Up Adapter M62-M67 Image Circle Diameter_Not Specified 45 mm Distance Between PrincipleStep 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