Sigma 100-300mm F4 EX HSM IF
Launched 2001


APO 100-300mm F4 EX
A large aperture telephoto zoom lens.

  • Four Special Low Dispersion (SLD) glass elements provide excellent imaging capability.
  • Internal focusing and an inner zooming system ensures ease of use and versatility.
  • Hyper Sonic Motor (HSM) provides silent, high-speed and precise auto-focusing with full time manual focus override.

The Sigma Corporation is pleased to announce the launch of the new 100-300mm F4 APO EX

This telephoto zoom lens provides a large F4 aperture at all focal lengths. Two Special Low Dispersion (SLD) glass elements in the front lens group and another two in the rear group offer excellent correction of chromatic aberration. High optical performance is demonstrated throughout the entire zoom range.

The internal focusing and zooming mechanism do not change the lens’s overall length, assuring ease of handling and operation. A rotating tripod mount can be conveniently detached if required. The Hyper Sonic Motor (HSM) ensures a silent, high-speed AF function as well as full-time manual focusing capability for Sigma, Canon, and Nikon mount lenses. Since the front of the lens does not rotate, a circular polarizing filter and Petal-type hood can be easily attached. High-speed focusing is possible when this lens is used with dedicated APO 1.4x EX tele-converter. With the optional APO 1.4x EX tele-converter, this lens becomes a 140mm to 420mm F5.6 AF zoom. With the APO 2.0x EX tele-converter, a manual focus zoom lens from 200mm to 600mm F8 is achieved.

LE_100-300mm EX
Construction 16 Elements in 14 Groups
Focal Length 100-300mm
Maximum Aperture ƒ4
Minimum Aperture ƒ32
Field of View 24.4-8.2°
Minimum Focus Distance 180cm
Number of blades 9
Maximum Magnification 1:5
Zooming System N/A
Filter Size 82mm
Diameter 92.4mm
Length 226.5mm
Weight 1440g
SRP at launch: £999.99
Available Mounts: Sigma AF, Canon AF, Nikon AF, Pentax AF, Konica Minolta AF
Practical Photo review Nov 2001
MTF_100-300mm F4 EX