Sigma Teleconverter 1.4x review for Nikon

by Enche Tjin on November 2, 2009

Sigma 1.4x teleconverter is very small and lightweight. But fortunately, the build quality is as good as Sigma EX pro line lenses

Sigma 1.4x teleconverter is very small and lightweight. But fortunately, the build quality is as good as Sigma EX pro line lenses

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.

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.

Image samples: Full size at my gallery

Nikon D90

Nikon D90

with Nikon D700 and Sigma 70-200mm f/2.8 HSM

with Nikon D700 and Sigma 70-200mm f/2.8 HSM

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