Objektivskolan - Ordlista - ED (Nikon)

 
Förkortningen betyder
ED = Extra-low Dispersion
 
 
Förklaring från Nikon
Nikon developed ED (Extra-low Dispersion) glass to enable the production of lenses that offer superior sharpness and color correction by minimizing chromatic aberration. Put simply, chromatic aberration is a type of image and color dispersion that occurs when light rays of varying wavelengths pass through optical glass. In the past, correcting this problem for telephoto lenses required special optical elements that offer anomalous dispersion characteristics — specifically calcium fluoride crystals. However, fluorite easily cracks and is sensitive to temperature changes that can adversely affect focusing by altering the lens´ refractive index. So Nikon designers and engineers put their heads together and came up with ED glass, which offers all the benefits, yet none of the drawbacks of calcium fluorite-based glass. With this innovation, Nikon developed several types of ED glass suitable for various lenses. They deliver stunning sharpness and contrast even at their largest apertures. In this way, NIKKOR’s ED-series lenses exemplify Nikon’s preeminence in lens innovation and performance.
 
 
Se exempel på berörda produkter
Nikon AF-S 14-24mm f/2,8 G ED
Nikon AF-S 500mm f/4 G ED VR
Nikon AF-S DX 18-135mm f/3,5-5,6 G ED
 
Se länkar
nikonusa.com




Objektiv för Canon
Nedan visas några populära alternativ (se alla)
Canon EF 300mm f/2,8 L IS USM Canon EF 300mm f/2,8 L IS USM
Canon EF-S 18-135mm f/3,5-5,6 IS Canon EF-S 18-135mm f/3,5-5,6 IS
Canon EF 50mm f/1,2 L USM Canon EF 50mm f/1,2 L USM
Canon EF-S 60mm f/2,8 USM Macro Canon EF-S 60mm f/2,8 USM Macro
 
 

Objektiv för Nikon
Nedan visas några populära alternativ (se alla)
Nikon AF-S 80-400mm f/4,5-5,6 G ED VR Nikon AF-S 80-400mm f/4,5-5,6 G ED VR
Nikon AF-S 85mm f/1,4 G ED Nikon AF-S 85mm f/1,4 G ED
Nikon AF-S DX 18-55mm f/3,5-5,6 G ED VR Nikon AF-S DX 18-55mm f/3,5-5,6 G ED VR
Sigma EX 70-200mm f/2,8 APO HSM DG Macro  Sigma EX 70-200mm f/2,8 APO HSM DG Macro
 
 

Objektivskolan
Våra artiklar utbildar dig (se alla)
Vilken betydelse har autofokusmotor?
Brännvidd och exempelbilder
Stativfäste
Ett objektiv blir till
Se objektiv för just din kamera
Nedan visas några modeller (se alla)
Canon EOS 6D
Nikon D810
Canon EOS 20D
Nikon D3300

Nyheter
Nikon AF-S 600mm f/4 E FL ED VR

Nikon AF-S 600mm f/4 E FL ED VR
Nikon AF-S 500mm f/4 E FL ED VR

Nikon AF-S 500mm f/4 E FL ED VR

Två populära objektiv du inte får missa
Sigma EX 150mm f/2,8 DG OS HSM APO Macro

Sigma EX 150mm f/2,8 DG OS HSM APO Macro
Tamron AF 18-270mm f/3,5-6,3 Di II VC PZD

Tamron AF 18-270mm f/3,5-6,3 Di II VC PZD

Senast besökta objektiv
Nikon AF-S 70-300mm f/4,5-5,6 G IF-ED VR

Nikon AF-S 70-300mm f/4,5-5,6 G IF-ED VR
Nikon AF-S 24-120mm f/3,5-5,6 G VR IF-ED

Nikon AF-S 24-120mm f/3,5-5,6 G VR IF-ED

Senast besökta kameror
Nikon D5100

Nikon D5100
Canon EOS 4000D

Canon EOS 4000D
Nikon D5300

Nikon D5300








Copyright © Objektivguiden 2020 Om Objektivguiden