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Sigma 4.5mm f/2.8 EX DC Circular Fisheye HSM

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4.5mm f/2.8 EX DC Circular Fisheye HSM

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Lowest Price: £699.00

Manufacturer's Description:



"The f/2.8 large aperture value produces a bright image in the viewfinder and allows photographers to take pictures in low light conditions, making it an ideal lens for Astrophotography and Aurora photography. Due to the quantifiable angle/area relationship it produces, this lens can be used for scientific and arts applications such as solid angle measurements of cloud distribution over the sky or vegetation distribution of the forest."
Availability
Discontinued No Edit
Year announced No Data Edit
General
Lens Mounts
  • Sigma SA
  • Pentax K SMC-FA
  • Nikon AF
  • Minolta AF
  • Canon EF
  • Sony Alpha
Edit
Focal Type No Data Edit
Lens
Focal Length 4.5mm Edit
Angle of View 0 - 180 Edit
Max Aperture f/2.8 Edit
Min Aperture f/22 Edit
Filter Size 72mm Edit
Stabilised No Edit
35mm equivalent No Data Edit
Internal focusing No Data Edit
Maximum magnification No Data Edit
Focusing
Min Focus 13.5cm Edit
Macro No Edit
Focusing modes
    Edit
    Construction
    Blades 6 Edit
    Elements 13 Edit
    Groups 9 Edit
    Weather-sealed No Data Edit
    Box Contents
    Box Contents No Data Edit
    Dimensions
    Weight 470g Edit
    Height 77.8mm Edit
    Diameter 76.2mm Edit
    MTF Data
    Effective focal length No Data Edit
    Weighted MTF No Data Edit
    Average Weighted MTF No Data Edit
    Weighted MTF 10 lp/mm No Data Edit
    Weighted MTF 20 lp/mm No Data Edit
    Weighted MTF 40 lp/mm No Data Edit
    Distortion No Data Edit
    Grade No Data Edit
    Photodo MTF Score No Data Edit

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