The Sigma APO 300mm f/2.8 EX DG HSM lens is an ultra compact Apochromatic telephoto lens with a fast f/2.8 maximum aperture, and incorporates two Extraordinary Low Dispersion glass elements to reduce chromatic aberration to a minimum. It incorporates internal focusing which enables responsive and fast autofocus speed. A detachable tripod socket and rotatable drop in filter holder are also included.
The improved DG lens design corrects for various aberrations. This lens is specially coated to get the best color balance whilst cutting down on ghosting caused by reflections from the digital image sensor. The lens provides the utmost correction against lateral chromatic aberration, which is a serious problem for digital SLR cameras.
With the use of the optional Sigma APO teleconverters, this lens can be used as a 420mm f/4 AF ultra-telephoto lens with a 1.4X EX teleconverter, or a 600mm f/5.6 AF ultra-telephoto lens with a 2X teleconverter.
|Focal Length||300 mm|
|Camera Mount Type||Canon EF|
|Format Compatibility||35mm Film / Full-Frame Digital Sensor
|Angle of View||8.2 degree|
|Minimum Focus Distance||8.20 inches (2.50 m)|
|Maximum Reproduction Ratio||1:7.5|
This Sigma 77mm adapter ring allows the EM-140 DG Ringlight Flash to be mounted on...
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