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It is also possible to use this lens with Sigma 1.4x EX and 2x EX APO Tele-Converter. When this lens is used with the 1.4x EX or 2x EX Apo Tele Converters (optional), it becomes a 210mm F4 AF tele-macro lens or a 300mm F5.6 MF tele-macro lens respectively.
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Photozone.de - DSLR lens reviews and beyond! ... Well, we aren't quite there yet nor will we ever see such a lens on a DSLR but the manufacturers are at least scratching this focal length range with some 18-200mm variants and the Sigma AF 18-200mm f/3.5-6.3 DC is one of the representatives here.
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Photozone.de - DSLR lens reviews and beyond! ... The new Sigma AF 17-70mm f/2.8-4.5 DC macro is a highly anticipated lens especially among Canon users seeking for a higher quality, affordable alternative to the original Canon EF-S 18-55mm f/3.5-5.6 or EF-S 17-85mm f/4-5.6 USM IS.
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Do note that the Sigma AF 14mm f/2.8 EX Aspherical HSM is not a fisheye, but a true rectilinear lens. Barrel distortion is well corrected, so straight lines even at the edges of the frame are accurately rendered.
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While a “fast” zoom lens like the Sigma AF 70-200mm f/2.8 APO EX HSM has advantages in low-light and action photography, an f/4-5.6 tele-zoom is fine for many outdoor situations such as this photo of the exterior of the George Eastman House.
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Sigma AF 70-300mm f4-5.6 DL Macr ... If you routinely order oversized enlargements, the extra cost of the AF 70-300mm f/4-5.6 APO Macro zoom will be a suitable investment. But for an entry-level zoom lens with impressive close focusing ability, the Sigma AF 70-300mm f/4-5.6 DL Macro offers an excellent value for the price.
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While a “fast” zoom lens like the Sigma AF 70-200mm f/2.8 APO EX HSM has advantages in low-light and action photography, an f/4-5.6 tele-zoom is fine for many outdoor situations such as this photo of the exterior of the George Eastman House.
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Sigma AF; 10-20mm f/4-5.6 EX DC HSM ... Tokina AF; 12-24mm f/4 AT-X PRO DX ... Sigma’s AF 10-20mm f/4-5.6 EX DC HSM ; Boasting the shortest focal length of the trio, this Sigma zoom is quite lightweight and compact.
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Sigma AF 10-20mm f/4-5.6D DC-HSM Review with full resolution sample pictures by Fredrik A. Rasmussen ... Sigma AF 12-24mm f/4.5-5.6 EX DG HSM. From: $859.00 USD...
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SIGMA Announces; Sigma AF 17-70mm F2.8 - 4.5 DC MACRO ... January 18th, 2006 - Sigma Corporation is pleased to announce the launch of the new Sigma AF 17-70mm F2.8-4.5 DC MACRO lens. The lens is ideally suited for a wide variety of subjects and is designed specifically for digital SLR cameras featuring an APS-C size...
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