Objektivskolan - Ordlista - APO (Sigma)

Förkortningen betyder

APO = Apochromatic

Förklaring från Sigma

In order to attain the highest quality images, the APO lens has been made using special low-dispersion (SLD) glass and is designed to minimize color aberration.

SIGMA´s APO zoom lenses minimizecolor aberration. As the refractiveindex of glass depends on thewavelength of light,color aberrationoccurs when different colors formimages at different points. Thisproblem often occurs with telephotolenses,but the Special Low-Dispersion(SLD) glass and Extraordinary LowDispersion (ELD) used in SIGMA´sAPO lenses helps to compensate forcolor aberration, thereby allowingthem to produce of sharp images.

Se exempel på berörda produkter

	Sigma EX 50-150mm f/2,8 II DC APO HSM
	Sigma EX 200-500mm f/2,8 APO HSM DG
	Sigma EX 70-200mm f/2,8 II APO HSM DG Macro

Se länkar

	sigmaphoto.com
	sigma-photo.co.jp

Objektiv för Canon
Nedan visas några populära alternativ (se alla)
	Canon EF 24mm f/2,8 IS USM
	Tokina AT-X Pro 35/2,8 DX Macro
	Canon EF-S 17-55mm f/2,8 IS USM
	Sigma EX 180mm f/2,8 HSM OS DG Macro

Objektiv för Nikon
Nedan visas några populära alternativ (se alla)
	Sigma EX 10-20mm f/3,5 DC HSM
	Sigma EX 85mm f/1,4 DG HSM
	Nikon AF-S DX 18-105mm f/3,5-5,6 G ED VR
	Nikon AF-S 35mm f/1,8 G ED