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Konica Minolta AF 17-35mm f 2.8-4.0 Digital SLR Lens for the Maxxum 5D & 7D Digital SLR...

Konica Minolta AF 17-35mm f 2.8-4.0 Digital SLR Lens for the Maxxum 5D & 7D Digital SLR... by Konica-Minolta $499.95 At Amazon on 3-30-2012.

AF mount; wide-angle zoom lens Aspherical lenses; anomalous dispersion glass 17-35mm focal length f4.0 maximum aperture 14 elements in 11 groups From the Manufacturer A wide-angle, zoom lens with high resolution and brightness. Features a circular iris with excellent defocusing characteristics and Advanced Distance Integration (ADI) for enhanced flash shooting performance. About the Dynax Lens System Aspherical Lenses: Minolta retains a distinct advantage in the use of aspherical optics. With ordinary spherical lenses, the focal point varies according to whether the incident light passes through the central or peripheral part of the lens, thus producing spherical aberration. While perfect compensation has never been achieved, and is particularly difficult to compensate for in large diameter lenses, decreasing the lens curve or combining dispersion lenses are methods commonly used in an attempt to compensate for spherical aberration. Minolta's aspherical lenses are developed not only to correct spherical aberration in large diameter lenses, but also to take high contrast images with less blotting effects while in the largest aperture. Minolta's aspherical lenses are effective in correcting distortion while using wide and standard zooms. What's more, the use of aspherical lenses decreases the total number of lenses required to produce a complete lens.This technology has enabled Minolta to create more compact lenses. AD Glass: AD (Anomalous Dispersion) glass decreases chromatic aberration more than normal optical glass, to prevent a decrease in resolving power which occurs when the focal length increases. The unique AD glass developed by Minolta enables vivid reproductions when using large diameter telephoto lenses and telephoto zoom lenses. Circular 7- or 9-Blade Aperture: The closer the aperture shape is to becoming a perfect circle, the more beautiful your defocused effect will be. That's why Minolta's specially designed aperture blades produce a circular opening from their widest setting down 1.5 steps to help smooth a scene's out-of-focus areas. When you take a picture with sunlight shining through foliage, a picture at sunset or a picture of neon lights, the source of the light can be defocused beautifully. The number of aperture blades must be maximized to make the aperture as perfectly circular as possible. Conversely, each blade can be curved to produce a circular aperture, and thus a desired blurring effect. I bought this lens after I got the Maxxum 7D when it came out. I hemmed and hawed as to whether I needed the extra-wide zoom, especially since I had spent almost $2000 on the body alone. I am so glad I decided to spend the money and buy this lens. My husband and I went to Japan in March and April and I estimate I used this lens about 85% of the shots I took. It is great in low-light, and combined with the integrated anti-shake in the D7, my photos are tack-sharp, even at night. The lens is not light, but it is solid and I can't rave about it enough. Unlike a lot of camera equipment I have purchased in the past, I have never for a moment regretted buying this lens. Back To Top Konica Minolta AF 17-35mm f 2.8-4.0 Digital SLR Lens for the Maxxum 5D & 7D Digital SLR... Available from Amazon Price: $499.95 Updated on 3-30-2012.

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