 K
eep Sigma teleconverters in mind when selecting
lenses for your camera. 2X teleconverters are more popular and powerful. 1.4X teleconverters are more useful and often have less distortion too. 3X teleconverters are rarely used
anymore, as they have so much image degrading effect as to be worse than simply enlarging a smaller image. Teleconverters work much better on telephoto lenses (200mm and up) than on shorter
focal length lenses and typically work better on
prime lenses than on
zoom lenses.
With a 1.4X teleconverter, you lose a stop of light. So an 135 f/2.8 lens becomes the equivalent of a 190mm f/4. A 200mm f/4 becomes a 280mm f/5.6 equivalent. With a 2X teleconverter, your 135mm f/2.8 becomes 270mm f/5.6 and your 200mm f/4 is a rather slow 400mm f/8 equivalent. You can also convert your
50mm f/1.8 into a 100mm f/3.5 using a 2X.
teleconverter |
| Sigma Teleconverters for
Canon EOS Cameras |
 Sigma APO Teleconverter
1.4x EX DG for Canon Mount Lenses. The Sigma APO Teleconverter 1.4x EX DG for
Canon Digital SLR Cameras is a dedicated APO teleconverter that can be mounted between select lenses and the camera body to increase the focal length by the power of 1.4. The multi-layer coating reduces flare and ghosting, which is a common problem with digital cameras. The lens also offers maximum magnification without any variation in the minimum focusing distance. Compact and lightweight, this teleconverter
can convert your lenses into longer focal-length lenses, so you don't have
to do a lot of unnecessary footwork. A case for the lens is included
|
| Sigma Teleconverters for
Pentax DSLR Cameras |
|
Sigma APO Teleconverter
1.4x EX DG for Pentax Mount Lenses. The Sigma APO Teleconverter 1.4x EX DG for Pentax Digital SLR Cameras is a dedicated APO teleconverter that can be mounted between select lenses and the camera body to increase the focal length by the power of 1.4. The multi-layer coating reduces flare and ghosting, which is a common problem with digital cameras. The lens also offers maximum magnification without any variation in the minimum focusing distance. Compact and lightweight, this teleconverter
can convert your lenses into longer focal-length lenses, so you don't have
to do a lot of unnecessary footwork. A case for the lens is included.
|
 Sigma APO Teleconverter 2x EX DG for Pentax Digital SLR Cameras. The Sigma APO Teleconverter 2x EX DG for Pentax Digital SLR Cameras is a dedicated APO teleconverter that can be mounted between select lenses and the camera body to increase the focal length by the power of 2. The multi-layer coating reduces flare and ghosting, which is a common problem with digital cameras. The lens also offers maximum magnification without any variation in the minimum focusing distance. Compact and lightweight, this teleconverter
can convert your lenses into longer focal-length lenses, so you don't have
to do a lot of unnecessary footwork. A case for the lens is included.
|
| Sigma Teleconverters for
Sigma DSLR Cameras |
|
Sigma 824110 1.4x DG EX APO Teleconverter for Sigma
SLR Cameras. The Sigma APO Teleconverter 1.4x EX DG for Sigma Digital SLR Cameras is a dedicated APO teleconverter that can be mounted between select lenses and the camera body to increase the focal length by the power of 1.4. The multi-layer coating reduces flare and ghosting, which is a common problem with digital cameras. The lens also offers maximum magnification without any variation in the minimum focusing distance. Compact and lightweight, this teleconverter
can convert your lenses into longer focal-length lenses, so you don't have
to do a lot of unnecessary footwork. A case for the lens is included
|
| Teleconverters for
Konica, Minolta, Sony DSLR Cameras |
igma APO Teleconverter
1.4x EX DG for Minolta and Sony Mount Lenses.
The Sigma APO Teleconverter 1.4x EX DG for Minolta and Sony Cameras is a dedicated APO teleconverter that can be mounted between select lenses and the camera body to increase the focal length by the power of 1.4. The multi-layer coating reduces flare and ghosting, which is a common problem with digital cameras. The lens also offers maximum magnification without any variation in the minimum focusing distance. Compact and lightweight, this teleconverter
can convert your lenses into longer focal-length lenses, so you don't have
to do a lot of unnecessary footwork. A case for the lens is included
|
