These are dedicated APO teleconverters that can be mounted between select lenses and the camera body to increase the focal length by the power of 1.4 or 2. The new multi layer coating reduces flare and ghost, which is a common problem with digital cameras. They demonstrate best performance with DG series lenses. They also offer maximum photography magnification by 1.4 x or 2x, without any variation in the minimum focusing distance. Compact and lightweight, these teleconverters convert your lenses into longer focal-length lenses, so you don't have to do a lot of unnecessary footwork.
2,0x Konverter EX DG
AF camera mount
CA, NA, SA, SO
EX, DG, ASP
6 Lenses in 5 Groups
Dimensions (Diameter x Length) (mm)
approx. 68 x 45,3 mm
approx. 240 g
Lens case, Front lens cap, Rear lens cap
EX Lens - With uncompromised design ideas and high-level optical technology and handling, these lenses, which are Sigma's representative lenses, meet the requirements of photographers at the highest level.
DG Lens - These are high-performance lenses optimized for digital cameras. They are ideal not only for 35 mm digital SLR cameras and film SLR cameras but also for APS-C digital SLR cameras. They deliver superior image quality by correcting for all types of aberration, especially distortion, and they have high resolution capability because they minimize chromatic aberration of magnification, which is particularly a problem for digital cameras. What is more, these lenses incorporate optical designs optimized for digital cameras and Sigma's own Super Multi-Layer Coating technology, so they reduce flare and ghosting due to reflection between the image sensor and lens surfaces, and they provide high contrast and a wide range of tone. They also provide enough peripheral brightness with little vignetting.
ASP - The aspherical lens complex allows freedom of design, improved performance, a reduced number of component lenses and a compact size. This lens provides high optical performance while maintaining a compactsize. For example, the 12-24 mm f/4.5-5.6 EX DG ASPHERICAL lens widensthe range of wide-angle lenses, and it provides distortion-free images withimage reproduction performance equivalent to that of a single-focal lengthlens. Aspherical lenses allow the production of high-quality images fromcompact, lightweight telephoto zoom lenses.