SIGMA 4.5mm f/2.8 EX DC CIRCULAR Fisheye HSM Pentax

This extremely wide-angle professional EX lens from the reknowned Japanese company Sigma is designed as a circular fish eye. This means that, unlike the all-format type, the picture is centred in the circle and does not cover the whole picture. The lens is ideal for close-up shots, and due to measurable image distortion it can be used in the science, technology and many other industries. It is equipped with a Super Multi Layer (SML) anti-reflective coating which minimizes light reflections from the sensor.

It uses ultrasonic micromotors, typically with high speed and accuracy, which is also very quiet. The lens has a fixed focal length of 4.5mm and f/2.8. It is designed for digital SLRs with an APS-C sensor and a compatible lens mount.

Key features

• Suitable for landscapes, festive events, nature, wilderness and other applications...
• An unconventional circular fish eye for APS-C format sensors
• 180° view angle for unusual shots
• Minimum focusing distance of 13.5cm
• Ultrasonic (HSM) motor for fast and silent focusing

Additional information:
Construction: 13 lenses in 9 groups
Field of view: 180°
Maximum magnification: 1:6
Number of diaphragm blades: 6
Dimensions: 76.2 x 77.8mm (diameter x length)
Weight: 470g