The Tamron SP AF17-50mm f/2.8 XR Di II LD Aspherical [IF] is a lightweight, sleek, fast standard zoom lens created solely for digital SLR video cameras. The focal size of the lens amounts approx. 26-78mm in 35mm layout.
This lens offers an f/2.8 optimum aperture throughout the entire zoom range, to ensure trouble-free photo chance ats all focal spans and ranges. Also, a more comprehensive photo articulation with the use of faster shutter speeds as a result of the optimum aperture offers enhanced photo pleasure.
Take note: Di-II lenses may not be made use of along with digital SLR video cameras utilizing image sensors that are actually bigger than that of an APS-C size imager (e.g. 1D set), or even along with 35mm film SLR video cameras.
Tamron SP AF 17-50mm f/2.8 XR Di II LD Aspherical [IF] Auto-focus Lense for Canon
Tamron Face Lense Cap
Tamron Back Lense Cap
Tamron Lense Bonnet
3 Part Filter Kit (UV+CPL+FLD).
Safety Lense Pouch.
Microfiber Clean-up Fabric.
The use of XR (Extra Refractive Index) glass optimizes the overall distribution of optical power, and also reduces various aberrations to the absolute minimum while achieving remarkable compactness. In addition, suitable positioning of two hybrid aspherical elements serves to maintain imaging performance and to shorten and compress the entire optical system.
An LD (Low Dispersion) glass element is used to accomplish effective compensation of on-axis and lateral chromatic aberrations, a critical factor for enhancing optical quality in digital photography, in order to achieve outstanding optical performance over the entire zoom range.
Peripheral light fall-off is minimized when compared with that of conventional lenses for film cameras, so images are uniformly bright from the center to the periphery.
By employing "Internal Surface Coatings" (i.e., multiple-layer coatings on cemented surfaces of plural elements) and multiple-layer coating technology on ordinary elements, ghosting and flare due to the reflections that occur when light enters through the front element and reflections caused by the imagers themselves are reduced to the absolute minimum.
The Zoom Lock prevents unwanted barrel extension when carrying the lens/camera combination.