Very fast 200 mm f/4 optics Focal length: 800 mm Resolution and limiting magnification: 0.58; 13.3 Light gathering capacity: 816x Dimensions and weight: 232 x 700 mm; 5.3kg Adapters and connections: 31.7 mm receptacle, 60 mm connection Backfocus: 72.5 +/-5 mm Made in Japan
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