Samsung NX500 Sony CyberShot HX90 Canon PowerShot G3 X Panasonic DMC-FZ330 Nikon Coolpix P900 Olympus Stylus 1s
Samsung NX500 Sony CyberShot HX90 Canon PowerShot G3 X Panasonic DMC-FZ330 Nikon Coolpix P900 Olympus Stylus 1s
  News Headlines APPLE CANON FUJIFILM HTC HUAWEI LG MICROSOFT NIKON OLYMPUS PANASONIC PENTAX SAMSUNG SONY  
Lets Go Digital
 
     
Powered by True
Counted by OneStat.com
Sigma 18-50mm F2.8 EX DC lens introduction
Dennis Hissink : July 20th 2004 - 01:00 CET
Digital Camera Review Test Appareil Photo Numerique Prueba camara digital Digitale Camera Test Dijital Kamera Incelemeleri Digitalkamera Test Digitalkamera
SigmaSigma 18-50mm F2.8 EX DC lens introduction : The characteristics of digital SLR cameras were taken into consideration when designing the lens power layout. The new advanced Sigma 18-50mm F2.8 EX DC lens design corrects various aberrations. This lens provides the utmost correction against lateral chromatic aberration which is a serious problem for digital SLR cameras. This lens is coated to get the best colour balance whilst cutting down flare and ghost caused by reflections from the digital image sensor and lens. It has excellent correction for vignetting and superior peripheral brightness is ensured. A Special Low Dispersion (SLD) lens and two aspherical lens elements provide excellent correction for all types of aberrations.
Sigma 18-50mm F2.8 EX DC lens introductionSigma 18-50mm lens - Design
The design produces a compact and lightweight, yet robust, construction with an overall length of 84.1mm (3.3in.) and maximum diameter of 74.1mm (2.9in.) and weight of 445g (15.6oz). This lens has a minimum focusing distance of 28cm (11in.). It is equipped with inner focusing system. The non-rotating front lens element makes the lens suitable for using its petal-type lens hood and circular polarizing filters. It is an ideal large aperture standard zoom lens for digital SLR cameras featuring APS-C size image sensor.

Sigma 18-50mm F2.8 EX DC lens specifications
- Focal Length: 18-50mm
- Minimum Aperture: F22
- Lens Construction: 15 Elements in 13 Groups
- Angle of View: 69.3°- 27.9°
- Number of Diaphragm Blades: 7pcs
- Minimum Focusing Distance: 28cm (11in.)
- Maximum Magnification: 1:5
- Filter Size: 67mm
- Lens Hood: Petal-type hood
- Dimensions: Diameter 74.1mm (2.9 in.)X Length 84.1mm (3.3in.)
- Weight: 445gr/15.6ounces

Sigma - EX lenses details
EX series, large aperture zoom lens designed specifically for use with digital SLR cameras. Some of the EX details are: EX lens series denotes excellence of engineering and new technology, Compact and lightweight zoom despite large F2.8 aperture, Excellent correction for various types of aberration provided by one SLD (Special Low Dispersion) glass element and two aspherical lenses and Super Multi Layer (SML) coating reduces flare and ghosting from which digital cameras tend to suffer.





   Sigma macro 50mm F2.8 EX DG lens launch
   Sigma macro 105mm F2.8 EX DG lens launch
   Sigma 12-24mm lens wins Award
   Next  Canon introduces new PowerShot A85
   Previous  Canon XL2 - The PRO Three-CCD MiniDV camcorder
   News by brand:Sigma
   News by category:Lens
   News by brand and category:Sigma Lens


LetsGoDigital digital camera magazine
Latest Sigma announcements
Sigma 20mm prime lens
Sigma updates website with user reviews and imagery
Sigma 24-35mm Art lens
Sigma digital camera test program
Sigma 18-35mm F1.8 lens
Mount conversion service
Sigma 18-35mm lens
Sigma lenses awarded by TIPA
Sigma 60mm F2.8 DN price announced
Sigma 19mm and 30mm lenses
Sigma Photo Pro 5.5
New Sigma lenses
Sigma DP1 Merrill
Sigma 18-250mm macro lens
Sigma SD1 Merrill
 
Twitter LetsGoDigital
Latest news headlines
Asus ZenFone AR smartphone
Asus ZenFone 3 Zoom smartphone
Panasonic DC-GX800 test pictures
Panasonic GH5 offers 6K photo function
Panasonic Lumix FZ80 captures 4K Photo & 4K Video
Panasonic Lumix FZ80 superzoom camera
Panasonic DC-GX850 records 4K Video and 4K Photo
Panasonic Lumix GX850 mirrorless camera
Nokia 6 Android Nougat smartphone
Panasonic Ultra HD OLED TV with HDR support
Panasonic DC-FZ82 with 4K photo and video
Panasonic DC-GH5 system camera
Fujifilm X-T2 Graphite Silver Edition
Canon Powershot G9 X Mark II sample photos
Fujifilm X-Pro2 Graphite Edition
   
CanonCasioFujifilmNikonOlympusHTCSamsungSonyPanasonicNokia
  Accessories Android Apps Camcorders Digital cameras Mobile phones Smartphones Software Tablets   CES CeBIT Gadgets IFA Photokina PMA