Sigma APO Teleconverter 1.4x EX DG for Canon Mount Lenses

Sigma APO Teleconverter 1.4x EX DG for Canon Mount Lenses – Product Description:

Sigma APO Teleconverter 1.4x EX DG for Canon Mount LensesThe 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.

The dedicated APO teleconverter can be mounted between select lenses and camera body to increase the focal length by the power of 1.4x. 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, without any variation in the minimum focusing distance. Compact and lightweight, these teleconverter convert your lenses into longer focal-length lenses, so you don’t have to do a lot of unnecessary footwork.

Product Features :

  • Teleconverter lens for Canon SLR cameras
  • Increases the focal length by the power of 1.4
  • Multi-layer lens coating and lens design reduces flare and ghosting
  • Includes lens case

Sigma APO Teleconverter 1.4x EX DG for Canon Mount Lenses – Review:

GREAT ALTERNATIVE TO EXTEND THE REACH OF YOUR SIGMA TELEPHOTO LENS!

I get the Sigma Teleconverter 1.4X especially for outdor sport games. I have Nikon D700 & D90 and Sigma 70-200mm f/2.8 HSM. I feel that 70-200mm f/2.8 is too short on D700 (full frame) and D90 (1.5x crop), therefore i get this teleconverter. It is a good alternative because it is much cheaper than buying 300mm f/2.8 or 100-300mm f4 lens.
Build quality

Build quality is the same as typical Sigma EX (professional line lens) and very well match with Sigma 70-200mm f/2.8 HSM.

COMPATIBILITY

Sigma teleconverter 1.4 only works with Sigma lenses. There are about a dozen compatible lens, but only a few retain auto focus function. There are: Sigma 180mm macro f/3.5 EX HSM, Sigma 300mm f/2.8 EX HSM, and Sigma 70-200mm f/2.8 EX HSM.

AUTO FOCUS PERFORMANCE

I don’t feel any difference in auto focus performance, so it remain excellent.

IMAGE QUALITY

It loses a bit of contrast and sharpness, but generally still very good. Check out sample images from my web blog. You can get the address from my Amazon profile.

CONCLUSION

Sigma teleconverter 1.4x is a great affordable alternative for Sigma telephoto lens’ user, especially for those who need extra reach. It does not sacrifice auto focus performance and only degrade a little bit of image quality. But remember that the maximum aperture will be smaller by one stop. So it might not be very good alternative if you shooting in low light like night sports.

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