Close-up lens A close-up lens is used to shorten the M.O.D.of the master lens for close-up shooting. The maximum object distance becomes the focal length of the close-up lens. The minimum object distance is calculated by the following formula. New minimum object distance = fc x S / (fc + S) fc= Focal length of the close-up lens S= M.O.D.of the master lens Imaging range for J17ex7.7B, and YJ19x9B with close-up lenses   82CL-UP800H 82CL-UP1300H J17ex7.7B Focusing Scale(mm) Object Distance(mm) Object Dimensions(mm) Tele end : 131mm Wide end : 7.7mm Tele end : 131mm Wide end : 7.7mm Infinity 0.6 Infinity 0.6 Infinity 0.6 Infinity 0.6 800 340 800 340 1300 407 1300 407 53x40 21x16 908x681 341x256 87x65 25x19 1499x1124 411x308 YJ19x9B Focusing Scale(mm) Object Distance(mm) Object Dimensions(mm) Tele end : 162mm Wide end : 9mm Tele end : 162mm Wide end : 9mm Infinity 0.9 Infinity 0.9 Infinity 0.9 Infinity 0.9 800 420 800 420 1300 530 1300 530 41x31 20x15 769x577 366x274 67x50 25x19 1264x948 462x346

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