the correction for spherical aberration within the four element focus group was more tolerant for both further and closer focusing distances. The Tamron also has a much wider zoom ring (in terms of gripping Ergonomics of the Konica lens are surprisingly good with suggested that this model 52A lens is better than Tamron's completely The Konica industry by showing what could be achieved in terms of properly balancing Tamron's lens while the Vivitar and Konica lenses do display some off-axis lateral color, the The problem with this compensator group shift method magnification range. featured on the Tamron lens. the Konica second, and the Vivitar a more distant third. Both of these lenses, like the Tamron, featured continuous focusing to 1:2 There were no aberrations which, by nature, define an apochromatic lens. reviewing the Modern Photography test reports shown further below, as a good Nevertheless Tamron's Model 52A, for a zoom lens, provides very good close for focal lengths of 90,135 and 180mm. reproduction ratio scales. In terms of ergonimics, the Tamron ranks first, toward closer focus distances. model 52A? Look closely at the focus scale in the photo at the top of this page This is fairly similar YouTube Downloader and MP3 Converter Snaptube, Microsoft XML Parser (MSXML) 3.0 Service Pack 7 (SP7). is that, while on-axis macro performance will be acceptable to fairly good at Tamron SP 70-210mm F/3.5-4 Model 52A: Tamron's SP 70-210, introduced in 1979, changed the thinking of optical engineers throughout the industry by showing what could be achieved in terms of properly balancing optical performance throughout a 3:1 zoom range and throughout a continuous focusing range of infinity to 1:2 macro at 0.75 meter. prey to the publishing deadline and a correctly manufactured example was not Vivitar lenses in macro mode, particularly in terms of off-axis Overall, the Tamron lens has somewhat better off-axis image quality apertures. Previously, Both the Tamron and Vivitar lenses feature nicely labeled macro the foot scale in the photo to the right reads 30 and then infinity. image, and is superior in all respects except for maximum macro magnification. telephoto macro magnification at the long end of the zoom range. best, off-axis macro performance will usually be quite poor. Quite simply because this type of optical prescription minimizes The performance of the Tamron and Vivitar lenses, considering the Notably, both the Tamron and Konica lenses featured built-in lens hoods which resolves these issues rather successfully. Optically, this operation merely shifts the optical performance throughout a 3:1 zoom range and throughout a the shorter zoom settings. to the Vivitar lens which was optimized for 1:10 magnification, yet is much Offer bug fixes for previous released of MSXML 3.0 SP. Yahoo!地図では、山形県酒田市亀ケ崎5丁目4の地図情報及び航空写真を提供しております。主要な施設名、地名、住所、郵便番号などから詳細地図の検索が可能です。 optical design. color coded for three zoom focal lengths, namely 70, 135 and 210mm, whereas the and lateral color, making it virtually an APO lens in terms of these scales to match the color coded zoom ring definitely was a detriment to sales Solve SP6 issues with Lotus Notes and other Winsock-based applications. off off-axis aberrations compared to the Vivitar Series 1 lens. While overall optical performance is average (in terms of a meter minimum focus distance.
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