Focal length range : 70mm - 140mm [2X zoom ratio]. Diagonal angle of view : 34.3° @ 70mm - 17.6° @ 140mm. Diagonal angle of view: 22.8° @ 70mm - 11.5° @ 140mm. Zoom type: Push/pull (70mm → 140mm). Speed range : F/3.8 across the focal length range.
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