Sigma 824110 1.4x DG EX APO Teleconverter for Sigma SLR Cameras
Price:


Product Feature
- Will multiply the focal length of your camera's existing lens by 1.4x, and will cut back the amount of light by one f-stop
- Features a new multi-layer lens coating and lens design that reduces flare and ghost, and creates an optimum color balance through the entire zoom range
- Constructed of five elements in three groups, weighs 5 ounces, and measures 2.7 x 0.75 inches (Diameter x Length)
- Comes with front and rear lens caps, and a soft carrying case
- Backed by a 1-year worldwide warranty with a 3-year extended US warranty
Product Description
The dedicated 1.4x APO Teleconverter features a high performance 5 element/3 group optical design, and it is optimized for use with long telephoto and telezoom lenses.The high performance optical characteristics of these teleconverters maintain the optical performance of the compatible lenses with which they can be used. Sigma APO Tele Converter 1.4x and 2x are dedicated Tele Converter lenses, which should be used only with the listed lenses. The 1.4X Convertor will fit the following lenses with a SIGMA Mount 180mm f/3.5 APO MACRO EX HSM - MF 300mm f/2.8 APO EX - AF 300mm f/4.0 APO MACRO - MF 400mm f/5.6 APO MACRO - MF 500mm f/4.5 APO - MF 70-200mm f/2.8 EX HSM - AF 70-210mm f/2.8 - MF 50-500mm f/4-6.3 APO - MF 120-300mm f/2.8 EX APO - AF 300-800mm f/5.6 EX APO - MF On the lists, the lenses marked "AF" will retain auto focus operation when used with a Tele Converter. The lenses marked "MF can only be used for manual focusSigma 824110 1.4x DG EX APO Teleconverter for Sigma SLR Cameras Review
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.
Most of the consumer Reviews tell that the "Sigma 824110 1.4x DG EX APO Teleconverter for Sigma SLR Cameras" are high quality item. You can read each testimony from consumers to find out cons and pros from Sigma 824110 1.4x DG EX APO Teleconverter for Sigma SLR Cameras ...

No comments:
Post a Comment