Step-Up Adapter M30.5-M37Step 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

5 CU700-30

Includes the following 6 Extension Rings

5 M43 CU700-43 M46 CU700-46 M49 CU700-49 M52 CU700-52 M55 CU700-55 M58 CU700-58 M62 CU700-62

Male Thread M72 Female Thread M58 Manufacturer Midwest Optical Systems

BP525 Light Green Bandpass (500-555nm)

4 μm Weight 180 Grams Mount C-Mount Filter Thread M49-0

18 Operating Temperature Range -10 to +50°C Dimensions 33 mm × 33 mm × 52

Male Thread M52 Female Thread M77 Manufacturer Midwest Optical Systems

5 – M105

38 mm Distance Between Principle Points 27

5 Minimum Object Distance 500 mm Front Diameter 29 mm Focus Control Manual Iris Control Manual Flange Back in Air 17

526 mm Exit Pupil Position -49 mm Entrance Pupil Position Not Specified TV Distortion (%) -0