C 50mm f/4.5

  • Angle of View: 82 deg
  • Construction: 11 elements/8 groups
  • Filter Size: 77mm
  • Minimum Focus: .13 ft
  • Weight: 780g
  • Floating Element:  This lens has a floating element which is moved by a seperate ring marked with green numbers, located in the front of the shutter speed ring. Most lenses, like this one, are designed to have the best sharpness when focused at infinity. Other lenses, like many macro lenses, are designed to have the best sharpness when focused closely. The floating element allows you to get the best sharpness at a range of focusing distances.
  • Notes: Acceptable results can be had by setting the floating element ring at infinity. This will give acceptable focus from about 7 feet to infinity. Setting the ring at 3.3 feet gives acceptable result from 3.3  to about 7 feet. If focusing closer, set at 3.3 feet at stop down as much as possible.
  • Using: To use the lens, first focus with the bellows focusing. Second, use the focusing scale on the side of the body or a tape measure to find the focusing distance. Third, align the floating element ring so that the green number matching the distance lines up with the red dot on the depth of field scale



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