natamambo Posted February 19, 2003 Share Posted February 19, 2003 I am going to be holdaying in Western Austrlia during the wildflower season and want to take a macro lens with me to (obviously!) record what I see. I am a "reasonably good" amateur but have no pretense about my work being saleable, it is to have "good" photos of the flowers with the hope that a select few may be suitable for enlarging and framing for my own house. I would like a macro focusing lens that provides more flexibility than the 1:3 Makinon 300mm mirror lens (fixed at f5.6) that I currently use, and two lenses that have come to the top in my reasearch are the Minolta 50mm f3.5 macro + 1:1 tube and the Vivitar Series 1 90mm f 2.8 + 1:1 tube. What are the benefits of the shorter / longer focal length in this type of photography and who has experience with either or both lenses who can offer advice. I use a Minolta X-570 and a Minolta X-700. Thanks in advance. Link to comment Share on other sites More sharing options...
tom_montemarano Posted February 19, 2003 Share Posted February 19, 2003 The biggest concern would be the very close working distance (from front of lens to subject) that you will get with a 50mm lens. The short working distance will make it difficult to light the subject. Also the angle of view is larger with the 50mm lens. At the same magnification, it will take in more of the background. That may be important depending on what you want and how distracting/attractive the background is. I don't have my information on FL vs working distance, but when I use my 70-210 at 210mm + a 1.4x Tc (approx 300mm) with a dual element closeup lens, I can get about 0.85x magnification at about 18 inches working distance. I think a 100mm lens gives about 10 to 12-inches at 1:1 and a 50 gives about 2 to 3 inches. Maybe someone else can give you more accurate numbers. Tom Link to comment Share on other sites More sharing options...
al_kaplan1 Posted February 19, 2003 Share Posted February 19, 2003 They're both outstanding lenses. I think that for flower pictures the perspective of the 90 would be better. With a 50 you're working so close your own shadow can become a problem! Link to comment Share on other sites More sharing options...
kelly_flanigan1 Posted February 19, 2003 Share Posted February 19, 2003 In the 1970's Vivitars; the 90mm F2.5 is the series 1 lens; and the 90mm F2.8 the NON series 1 lens. Both are real good; the series 1 better. Link to comment Share on other sites More sharing options...
sknowles Posted February 21, 2003 Share Posted February 21, 2003 I would personally opt for the Minolta MC/MD 100mm f4 macro lens with the 1:1 tube, especially a tube with a tripod mount, found on the MC versions of the lens but works with MD versions too. This gives you the working distance advantage of the 100mm macro lens and a 100mm telephoto lens, albeit a slightly slower (aperture) one. The macro lenses are some the Minolta's best manual focus lenses, so either the 50mm or 100mm are good. Good luck, Scott. Link to comment Share on other sites More sharing options...
larry h. Posted February 24, 2003 Share Posted February 24, 2003 I have the Series 1 90mm/2.5 macro. I have not compared it head to head against the Minolta 100mm/3.5 or /4 macros, but it would be very hard for the original Minoltas to be better. When stopped down to f/3.5, the Vivitar produces perfect pinpoint circles for a starfield (albeit shot at infinity, not macro distances; but considering this lens is designed for macro use, it is infinity that would suffer.) Three advantages to the Vivitar as well. It is faster, which is immaterial for macro work but very good for portrait work. The 1:1 adapter has a built in tripod mount. The 1:1 adapter has glass elements, designed to correct for close focusing aberrations. But in the end, either a 100mm Minolta or the 90mm Vivitar will be excellent. Link to comment Share on other sites More sharing options...
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