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INTRODUCTION Some years ago Zeiss licensed Kyrocera of Japan to use the name Zeiss on some lenses made for the Contax brand of cameras. Life was good. Contax went out of business in 2005, ending the need for these lenses. As soon as the agreement expired in 2006, Zeiss looked for something to do with the Japanese manufacturing capacity. Zeiss decided to put these former Contax mount lenses in Nikon mounts instead, and that's how we get these ZF lenses. These are new lenses made in Nikon mount. This lens is not made in Germany and it is not made in a Zeiss factory. It is made in Japan by Cosina, the same company that made the cheap FM-10 for Nikon and many other inexpensive lenses and cameras for third-party makers for many decades. Manual focus lenses went obsolete 20 years ago. This is a lens for the gear hobbyist or collector, or someone shooting manual focus 35mm film cameras. This lens can't autofocus and makes no sense to use on for any digital or AF Nikon. It feels exactly like a third-party manual focus lens from the 1970s, and for good reason. Cosina, who makes this lens, made many of the third-party lenses of the 1970s. This Zeiss branded lens even has the same focus ring finish as my very first ever third-party lens. I got a Vivitar 200mm f/3.5 T-mount lens for Christmas in 1973. It has the same anodized aluminum finish, engraved markings and straight-ribbed focus ring of this Zeiss lens. Ditto for the 25mm f/3.5 Lentar lens I bought for my Minolta at Fortunoff in 1974 before I could afford camera-brand lenses. I was only 12 years old back then. Better lenses, if this Zeiss was better, don't improve image quality anywhere near as much as stepping up to a larger film format. SPECIFICATIONS Zeiss calls this the Zeiss Planar T* f/1,4 50 mm ZF Optics: 7 elements, 6 groups. T* brand multicoating. Filter Size: 58 mm filter. WRONG! Nikon's standard is 52 mm, so my stack of 52mm filters won't work. Hood: Superb bayonet metal hood, included. I never use hoods. Size: 2.565" (65.92 mm) diameter x 1.760" (44.70 mm) extension from flange at infinity. Weight: 11.585 oz. or 328.5g, my actual measurement without caps or hood or filters. (The Nikon 18-200mm VR weighs 21.065 oz. for comparison, complete with step up ring and 77mm filter.) The Zeiss rear lens cap weighs 10.1 g, compared with 8.8 g for Nikon's. Oddly the Zeiss cap feels a little weaker. Close focus: 1.5 feet or 0.45 m, normal for these lenses 50 years ago. Diaphragm: f/1.4 to f/16. 9 straight blades. Annoying half-stops make it difficult to impossible to set aperture by feel, also makes it had to set third stops (as light meters read). Traditional aperture ring coupling flange for use with 1959 - 1977 vintage cameras. PERFORMANCE (on a D200 digital Nikon) See my 50mm Lens Comparison for a knock-down, drag-out comparison among this and many other 50mm lenses. I have far more details in those pages about this lens, including exaple photos, than I have here. Optically this Zeiss is fine and similar to the Nikkor 50mm f/1.4s. Mechanically I prefer the Nikkors. Sharpness f/1.4: Soft focus effect. Spherical aberration puts a soft, low contrast veil over a sharp underlying image. This is typical of f/1.4 50 mm lenses. It has high resolution, but low contrast, which results in a soft image. f/2.8: Brilliantly sharp. Only the slightest traces of secondary lateral chromatic aberration (called purple fringing by hobbyists). Again, typical of 50 mm lenses. f/4: Brilliantly sharp. f/8: A little less sharp. This isn't cause by the optics; it's the limits of physics and diffraction. f/16: less sharp due to diffraction, as expected. Distortion Minor Barrel. Correct with -1.00 in PhotoShop CS2's Lens Distortion Correction Filter. This is typical for a 50mm f/1.4 lens. This is too bad; the Nikon 50mm f/1.8 has less distortion. Mechanics It feels like a good off-brand like Spiratone or Tokina from the 1970s. Made in Japan, too, just like them. All markings are engraved and filled with paint, just like the off-brands of the 1970s. No rubber, just metal, focus ring. Can't be focused easily with just one finger. The focus less smooth than a Nikkor manual focus lens. It's also worse than the Nikkors of the 1960s. The Zeiss focus ring is round, the early Nikkors had scalloped rings you could turn with one finger. Half stop aperture clicks. This makes it tough to set third stops, and tougher to set full stops by feel. Red, not yellow feet markings. Very clean inside, and ought to stay that way because it doesn't have air pumping in and out as a zoom does. It has no chrome grab ring for mounting and unmounting. RECOMMENDATIONS I'd much rather have a Nikon manual focus lens than this one, and much rather have an AF compared to a manual focus lens. A used Nikkor 50mm f/1.4 AI has the same optical performance and better mechanical performance for a lot less money. |