Sun Zoom 190-430mm f/5.8

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• T-Mount, 135-film
• Focal Length: 190-430mm
• Lens-construction: 8 groups, 11 elements
• Angle of View: 6° at 430mm, 12°40' at 190mm
• Minimum Focusing Distance: 5m / 18ft (In case of using the close-up tube system built-in to the rear barrel of the lens: 1.41m at 190mm, 3m at 410mm)
• Net weight: ?
• Filter Size: ?
• Zooming mechanism: by rotating zoom ring, mechanical compensation by U type cam motion