50 mm Lens Extension Ring EXT-50 Filter Thread_M25.5-0.5 The FK100 is an excellent

The FK100 is an excellent starter kit for evaluating your system and image quality

46 mm Chief Ray Angle 6

5SA-1 Technical Specifications:

44 mm Rear Principle Point 5

87 mm Entrance Pupil Position Not Specified TV Distortion (%) 0

50 mm Lens Extension Ring EXT-50 Filter Thread_M25.5-0.5 The FK100 is an excellentMidOpt EXT 50. 0 50. 0mm Lens Extension Ring Includes the following Extension Ring 50. 0mm EXT 50. 0 About Lens Extension Rings Extension Rings are used to decrease the Minimum Object Distance (MOD) for C CS mount lens Increase Magnification for close up applications Available as a 6 Extension Ring Set, 4 Extension Ring Set, and in individual size ranging from 50. 0mm to 100mm Manufactured by Midwest Optical Systems