1/6/2023 0 Comments Vivitar series 1 70 210mm f2 8The first edition was designed by Vivitar (Ellis Betinsky, NASA optical designer, had a hand in it) and built by Kiron. It is much easier to design and build a quality variable aperture lens. Due to the fact that the third one is a variable aperture lens, (2.8-4) it will be somewhat sharper than a fixed aperture lenses. The 4th & 5th editions are also 2.8-4 variable aperture model's, but lacking in construction quality (Cosina built). The 4th & 5th editions are nothing to seriously consider, so we will concentrate on the first three editions, which are the good one's. However, for the sake of discussion, we will deal with the first five. There are numerous (6) Series 1, 70-210 lenses. Here is my review of the Viv S-1 7210 line. However, the nerwer ones made by Cosina, are lacking in build quality. I really like the older Vivitar S-1 lenses. That is one of the later model's, made by Cosina.
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