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Pentax 300mm F/4 SMC A* K Mount Manual Focus Lens {77}

Grade Notes Price Qty
With Caps
$549.00

* Item pictured for illustrative purposes only, actual item not pictured.

Pentax 300mm F/4 SMC A* K Mount Manual Focus Lens {77} Description

Details

This would magnify the image by 6 times compared to a 50mm normal lens on a 35mm full-frame or digital full-frame sensor. If it is used with a APS-C sensor, the focal length is magnified by a factor of typically 1.5 times, that would make it equivalent to 450mm on 35mm full-frame. These lenses have a much longer minimum focus area and can become quite heavy.  This type of lens is used for nature, sports and surveillance. When using one of these lenses, your shutter speed should be at least the same or faster than the focal length. Even using cameras with optical image stabilization, you still should be on a tripod or unipod.  It is very hard to hold this type lens and get sharp images.

KEH Specifications

  • Focal Length: 300mm
  • Aperture Maximum: f/4
  • Aperture Minimum: f/32
  • Camera Mount Type: Pentax K bayonet
  • Format Compatibility: 35mm
  • Minimum Focus Distance: 13 feet
  • Elements/Groups: 8/7
  • Angle of view: 4.6° horizontal
  • Tripod Collar: No
  • Filter Thread: 77mm
  • Dimensions: 5.2 inches long
  • Weight: 30 oz (850g)

Specifications

Physical Characteristics

Lens Mount Pentax KA (SMC-A)

General information

Brand Name Pentax

Technical Information

Fixed Focal Length 300 mm
Autofocus No

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