Objektivskolan - Ordlista - XR (Tamron)

 
Förkortningen betyder
XR = Extra Refractive Index Glass
 
 
Förklaring från Tamron
XR (Extra Refractive Index) glass can bend light rays at steeper angles, thereby decreasing the physical length of the lens while enhancing imaging performance by minimizing optical aberrations. This has allowed Tamron to develop a line of shorter, smaller-diameter, lighter lenses without sacrificing lens speed, and actually upgrading image quality compared to older designs. XR glass is costlier than conventional glass but it yields enhanced optical power distribution, making possible many of the outstanding and innovative lens designs that bear the XR designation. XR glass, with its superior light-bending power, makes it possible to design a short-barrel lens with the same light-gathering ability (aperture value) as a long-barrel lens—even with a smaller lens diameter. By using this principle Tamron has been able to shorten the length of the entire optical system and produce lighter, more compact lenses of the same speed, and also to provide greater zoom ranges in lenses that are much more convenient to carry and hand-hold.
 
 
Se exempel på berörda produkter
Tamron AF 18-200mm f/3,5-6,3 XR Di II
Tamron AF 18-250mm f/3,5-6,3 XR Di II
Tamron SP AF 17-50mm f/2,8 XR Di-II LD Asph IF
 
Se länkar
tamron-usa.com




Objektiv för Canon
Nedan visas några populära alternativ (se alla)
Tamron SP AF 90mm f/2,8 Di Macro Tamron SP AF 90mm f/2,8 Di Macro
Tokina AT-X Pro 11-16mm f/2,8 DX Tokina AT-X Pro 11-16mm f/2,8 DX
Tamron SP AF 17-50mm f/2,8 XR Di-II LD IF VC Tamron SP AF 17-50mm f/2,8 XR Di-II LD IF VC
Canon EF 400mm f/2,8 L IS USM Canon EF 400mm f/2,8 L IS USM
 
 

Objektiv för Nikon
Nedan visas några populära alternativ (se alla)
Nikon AF-S 300mm f/2,8 G IF-ED VR Nikon AF-S 300mm f/2,8 G IF-ED VR
Tamron SP AF 17-50mm f/2,8 XR Di-II LD IF (motorized) Tamron SP AF 17-50mm f/2,8 XR Di-II LD IF (motorized)
Nikon AF DX 10,5mm f/2,8 G ED Fisheye Nikon AF DX 10,5mm f/2,8 G ED Fisheye
Tokina AT-X Pro 12-24mm f/4 DX II Tokina AT-X Pro 12-24mm f/4 DX II
 
 

Objektivskolan
Våra artiklar utbildar dig (se alla)
Brännvidd och exempelbilder
Stativfäste
Att rengöra ett objektiv
Objektivets anatomi
Se objektiv för just din kamera
Nedan visas några modeller (se alla)
Canon EOS 300D
Nikon D1X
Canon EOS 100D
Nikon D3400

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
Tokina AT-X M 100mm f/2,8 AF PRO D Macro

Tokina AT-X M 100mm f/2,8 AF PRO D Macro
Sigma EX 30mm f/1,4 DC HSM

Sigma EX 30mm f/1,4 DC HSM

Senast besökta objektiv
Sigma 70-300mm f/4-5,6 DG APO Macro (motorized)

Sigma 70-300mm f/4-5,6 DG APO Macro (motorized)
Canon EF 70-200mm f/2,8 L USM

Canon EF 70-200mm f/2,8 L USM

Senast besökta kameror
Nikon D90

Nikon D90
Canon EOS 30D

Canon EOS 30D
Nikon D3s

Nikon D3s








Copyright © Objektivguiden 2020 Om Objektivguiden