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Rokinon 500mm Mirror Lens for Canon EOS Mount 2X Teleconverter Lens [Camera]

Product Description :
Aperture F80 Fixed
Optical Construction 7 Elements in 6 groups
Angle of View 5 Degrees Minimum Focusing Distance 170m 56ft
Filter Size Rear 305mm Front 72mm
Focus Type Manual Mount T-Mount Adapter Included for Canon EOS Includes 2X Teleconverter Lens