The lens uses a six lens gauss type optical formula. Famous lens designer Willi Merté developed the Biotar style lenses in 1927 for movie cameras.
Merté continued developing and experimenting with his Biotar lens design and in 1938 the Biotar 75 was introduced. Even back then, the Biotar 75 was an exclusive lens reserved for enthusiasts with deep pockets. After the second World War, production was relaunched and most copies available are post World War II copies. Carl Zeiss Jena Biotar 75mm f1.5 is a big and heavy lens with unusual focal length.It's a classic Biotar formula. As most of the lenses from that time it's very easy to disassemble, clean and re-lubricate. Carl Zeiss Jena 75mm f1.5 is the bigger brother of Biotar 58mm f2.0, and if you think 58mm has swirly bokeh, then the 75mm will make you dizzy. Exactly like the smaller option, it's super sharp in the center, softer in the corners. Stopped to 2.0-2.8 and the swirl is gone, edges become sharp and bokeh "normal" smooth.
Colors and contrast pop with very little vignetting. Contrast slightly drops when shooting in direct sunlight.Coating: Single coated glass (Zeiss T coating). Optical design: 6 elements in 4 groups. Body is in excellent condition. Lens barrel has no wear and accept light filter well. G lass is clean from scratches or wear. There is n o dust or fungus, or oil inside. The aperture moves nicely at every aperture position. The aperture-control ring turns smoothly and accurate. The focusing ring turns smoothly and precise. Otherwise I can't guarantee availability of the item. Item are carefully packed usually with bubble wrap in carton boxes. All items must be return in original conditions without any physical changes with all of its components. If you have any questions - Please ask!
I will try to answer in detail! Please check my other items! This item is in the category "Cameras & Photo\Lenses & Filters\Lenses". The seller is "ukr_photo_goods" and is located in this country: UA.This item can be shipped worldwide.