Objektivskolan - Ordlista - OS (Sigma)

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OS = Optical Stabilizer Function

Förklaring från Sigma

This function utilizes a built-in mechanism that compensates for camera shake. It dramatically expands photographic possibilities by alleviating camera movement when shooting by hand held camera.

The OS function uses two sensors inside the lens to detect vertical andhorizontal movement of the camera and works by moving an optical imagestabilizing lens group to effectively compensate for camera shake. The OSfunction offers the equivalent of using a shutter speed 4 stops faster makingit suitable for telephoto and low lightphotography. As the stabilizing feature is built intothe lens, it can be designedspecifically to suit the characteristicsof that lens. This provides precisecompensation for camera shakethroughout the entire zoom range.This also enables the correctlystabilized image to appear in theviewfinder aiding autofocus andcomposition.

Se exempel på berörda produkter

	Sigma EX 17-50mm f/2,8 DC OS HSM
	Sigma EX 70-200mm f/2,8 APO HSM DG OS
	Sigma EX 50-500mm f/4-6,3 DG APO OS HSM

Se länkar

	sigmaphoto.com
	sigma-photo.co.jp

Objektiv för Canon
Nedan visas några populära alternativ (se alla)
	Sigma EX 300mm f/2,8 APO DG HSM
	Tamron AF 18-270mm f/3,5-6,3 Di II VC LD IF Macro
	Canon EF 800mm f/5,6 L IS USM
	Canon EF 70-300mm f/4-5,6 L IS USM

Objektiv för Nikon
Nedan visas några populära alternativ (se alla)
	Nikon AF-S 50mm f/1,8 G
	Sigma EX 105mm f/2,8 DG Macro
	Tokina AT-X M 100mm f/2,8 AF PRO D Macro
	Nikon AF-S 200-400mm f/4 G IF-ED VR

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