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The 300 mm f /2.8 APO was introduced in 1985 as one of the original dozen lenses released with the Maxxum/Dynax 7000. [1] Like contemporary Canon FD super-telephoto lenses, it was available exclusively with a white finish to reflect the sun, minimizing the effect of thermal expansion on optical alignment, [2] and carried a gold ring towards the front of the lens, [3]: 37 designating it as a (G ...
When Sony took over the system in 2006, [14] 12 lenses were rebranded as Sony A-mount lenses and launched alongside 6 new designs and 2 teleconverters. [15] Of the dozen rebranded lenses, most are optically, mechanically and electrically identical to their Minolta predecessors and differ only in their outer appearance, however, three have seen ...
The first generation body is made of metal. It was launched alongside the Minolta Maxxum 9000 in fall 1985. [1] There is a focus limiter switch to speed up focusing. This lens and the Minolta AF 70-210mm f/4 lens are colloquially known as the "big beercan" and "beercan", respectively, by Minolta camera users because their shape and size closely match the proportions of a typical aluminum drink ...
The Tamron 28-300mm F/3.5-6.3 Di VC PZD (Model A010) is an interchangeable superzoom full-frame DSLR camera lens announced by Tamron on February 6, 2014 [7] and released in late June 2014 for the Canon and Nikon mounts and on 30 October 2014 for the Sony mount.
Though designed for Sony's full frame E-mount cameras, the lens can be used on Sony's APS-C E-mount camera bodies. [ 2 ] The 70-300mm F4.5-5.6 G lens is one of the least expensive G-series lens Sony makes, is popular among weight-sensitive landscape photographers, wildlife photographers, and hobbyists who want G-lens quality and the extra reach ...
However, this specification is insufficient to compare lenses for different cameras, because field of view also depends on sensor size. For example, a 50 mm lens mounted on a Nikon D3 (a full-frame camera) provides approximately the same field of view as a 32 mm lens mounted on a Sony α100 (an APS-C camera). Conversely, the same lens can ...
That distance is sometimes given on the filter in millimeters. A +3 close-up lens has a maximal working distance of 0.333 m or 333 mm. The magnification is the focal distance of the objective lens (f) divided by the focal distance of the close-up lens; i.e., the focal distance of the objective lens (in meters) multiplied by the diopter value (D) of the close-up lens:
Stepwise magnification by 6% per frame into a 39-megapixel image. In the final frame, at about 170x, an image of a bystander is seen reflected in the man's cornea. Magnification is the process of enlarging the apparent size, not physical size, of something. This enlargement is quantified by a size ratio called optical magnification.
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