skillnaden mellan DC, DL och DG

[Vicjun]

Vad är egentligen skillnaden mellan DC, DL och DG när det gäller objektiv?

 

[nosferatu]

Sigma DG, Tamron Di, Canon EF (t.ex.)
Fulltecknande - både för analoga och digitala kameror (fullformat eller ej), men ibland anpassade speciellt så att digitalt ska funka utan problem.

Sigma säger:
The most suitable lenses for 35mm film single-lens reflex cameras, as well as for digital SLR cameras. Sigma's development of the DG (Digital) range of lenses has concentrated on the correction of distortion and aberrations. Magnification of chromatic aberration is particularly conspicuous with digital cameras. The optical designs and cutting-edge technology incorporated by Sigma eliminate flare and ghosting from te image sensor and create excellent color balance. Vignetting is minimized whilst marginal illumination is ensured. These high performance lenses are equally suited for digital and analogue cameras.

Sigma DC, Tamron Di II, Canon EF-S (t.ex.)
Endast för små APS-C sensorer (ex. 1,6x)

Sigma säger:
These are special lenses designed so that the image circle matches the smaller size of the image sensor of most digital SLR cameras. Their specialized design gives these lenses the ideal properties for digital cameras, the compact and lightweight construction is an added bonus!