Biogon lens design books

In many ways the history of carl zeiss ag is the history of photographic lenses. This lens type has a variable focal length which can replace a series of lenses for a certain. Lens elements werent coated back then, so for this 85mm as well as for their 50mm lenses they came up with a unique design where the seven elements were grouped as 3. At 90 the focal length is approximately half as long as the formats diagonal. Jul 01, 2014 if subjecttolens distance is more or less equal to the lenstoimage distance then the lens should be symmetrical. The lens design used was that of a true wideangle rather than a retrofocus type. Symmetrical vs asymmetrical lens design sign in to follow this. By examining the examples of relatively simple lens designs, it is actually easier to dissect why the lens designs are the way they are. Parameters include surface profile types spherical, aspheric, holographic, diffractive, etc. Its optical performance is better than the leica summicronm 35mm f2 19791996 and about the same as leicas newest leica summicronm 35mm f2 asph. The types of optical systems in a lens designers toolbox. Optical lens design is the process of designing a lens to meet a set of performance requirements and constraints, including cost and manufacturing limitations.

Zeiss 35mm f2 biogon zm t lens for leica m mount, black 43. The design of a fixed focal length lens also known as prime lenses presents fewer challenges than the design of a zoom lens. The authors of books on lens designs mostly but dont entirely agree on classifying lenses since there is some judgement involved. Lens design is, therefore, a strong component of a wellrounded education in optics, and a skill valued by industries employing optical engineers. Zeiss biogon 2,8 21 mm lens since their introduction, lenses branded biogon are usually approximately symmetrical semisymmetrical wideangle design with a usable angle of view of 90 or more. A highquality prime lens whose focal length is about equal to the diameter of the film frame or sensor may be constructed from as few as four separate lens elements, often as pairs on either side of the aperture diaphragm. It comprises 8 optical elements and is based on the symmetric carl zeiss biogon design. With a focal length of 35mm, it is incredibly versatile and its high performance and compactness make the c. Of course, the interesting thing about 3d rendering, or 3d pop as its often called is that its one of those subjects that divides opinion mostly because its a very. In spite of that, a lot of lens design books and textbooks that i have read rely. Grimes site there is a link to the c and h sales company, who have stocks of a 75mm carl zeiss biogon, which i assume is the same as the lens you are talking about. Biogon is zeiss trademark for reasonably symmetrical wideangle lenses. Biogon lenses arent ideal in terms of their lens design for shooting with digital cameras. Classic symmetrical wide designs were the zeiss biogon and schneider superangulon lenses the biogon name is a bit debased these days, as used for the zeiss zm lenses.

The slim lens design is easy to grip and focus, and uses a standard 46 mm filter diameter similar to many of the other zm lenses and allows filters to be. The biogon opened up new visual territories that photogs had literally never seen before. With a focal length of 35mm, it is incredibly versatile and its high performance and compactness make the c biogon t 2. Design for near and distant viewing distances is essentially identical. The zeiss sonnar is a photographic lens originally designed by dr. However, the company designed the distagon t 35mm lens with some specifications that you may find beneficial. For many other optical devices such as telescopes, microscopes and theodolites where the visual image is observed but often not recorded the design can.

While advancements in the field over the past two centuries have done much to transform it from the former category to the latter, much of the lens design process remains encapsulated in the experience and knowledge of industry veterans. Designed to prevent unwanted stray light from entering the lens. Leicas summicrons are smaller due to their simpler optical designs, and rarely block the finder. Zeiss distagon t 35mm focal camera lenses for sale ebay. Lens elements werent coated back then, so for this 85mm as well as for their 50mm lenses they came up with a unique design. Unlike the 1935 design, these 1954 lenses used a 90. No matter what youre looking for or where you are in the world, our global marketplace of sellers can help you find unique and affordable options. The reason for its sharpness is in the optical formula. And modern lenses for small formats are so complicated that maybe classifying some of them isnt possible. A book of lenses shows that the same basic principles of psychology that work for board games, card games and athletic games also are the keys to making topquality video games. Offering stunning image quality and invisibly low geometric distortion, it is a true creative enabler when shooting wide vistas, inspiring landscapes, cityscapes and. Smith, and optical system design robert fischer, introduction to lens design. The now familiar biogon design was a later development postww ii, coincidentally also developed by bertele but not until 1951 when bertele was no longer employed by zeiss but did this project under contract.

When we learned of ricks new, hardcover book the hasselblad system. When mounting the contax 28mm g users immediately notice most of the lens fits inside the camera body. This is particularly true of the 235 and 250 loxia lenses, which are near identical in size and shape. A zoom lens derivative of the sonnar, the variosonnar also exists, in which a number of lens groups are replaced with floating pairs of lens groups. The process of designing lenses is both an art and a science. The zeiss planar 35mm f2 biogon zm offers a highspeed f2 aperture, the fastest in the biogon family, is an asset when shooting in dim light. A comprehensive guide to camera lens design and zeiss. Zeiss ikon biogon t zm 235 wideangle camera lens for leica mmount rangefinder cameras voigtlaender ultra lens 28 mmf 2. Angle, was built to utilize the exceptional 38mm f4.

Since their introduction, lenses branded biogon are usually approximately symmetrical semisymmetrical wideangle design with a usable angle of view of. Good game design happens when you view your game from many different perspectives. The spectrum of zeiss zm lenses for digital and analogue rangefinder cameras combines advanced lens design and superiorquality materials and. The last three catalogues have listed the following item. Check out the new look and enjoy easier access to your favorite features. In fact, moderate wideangle lenses have been made with the design structure of the conventional lens types like tessar and planar. The variosonnar is a carl zeiss photographic lens design named in relation to the zeiss sonnar. The c in the title indicates another outstanding feature. The precise benefits you get from this lens may depend on the environment in which youre shooting and how you use the lens. It was originally a tradename owned by nettel camerawerke in sontheim am neckar for a 4. Sep 12, 2006 the authors of books on lens designs mostly but dont entirely agree on classifying lenses since there is some judgement involved. This definitive and authoritative textbook brings together contributions from internationally recognized experts within the field of contact lens practice. The biggest gotcha with this zeiss lens is its incompatible 43 x 0.

Of this batch of seven lenses, the original g1 could accept only four, the 16, 28, 45, and 90mm lenses. The loxia 35mm identifies the classic biogon optical design of the lens. The writeup is a bit long, so i will not quote from it here. Due to its wide angle coverage, and the small distortion, it and the metrogon became the standard aerial lens until it was displaced in 1952. As you read above, zeiss developed the sonnar 85mm f2 lens for their contax rangefinder system in the 1930s.

The universal traveler this lens offers the widest angle of view possible using the cameras builtin viewfinder. The design of photographic lenses for use in still or cine cameras is intended to produce a lens that yields the most acceptable rendition of the subject being photographed within a range of constraints that include cost, weight and materials. Zeiss uses a rather complex but very successful 7 element design, compared to the more standard 5 element design. I have no doubt that there are books on small areas of the subject of lens design such as this i have. The topogon is a double gauss design arranged in a symmetrical design. Composed of 9 optical elements, this lens is based on the symmetrical carl zeiss biogon lens design concept. While very sharp, early versions of the lens suffered from flare due to its many airtoglass surfaces.

Schneider, lieca, and hasselblad have used the design of the biogon for their own lens manufacturing. Before the introduction of lens coating technology the fourelement tessar, with slightly inferior image quality, was preferred due to its better. Its optical performance is better than the leica summicronm 35mm f2 19791996 and about the same as leicas newest leica summicronm 35mm f2 asph the biggest gotcha with this zeiss lens is its incompatible 43 x 0. Large format lenses are photographic optics that provide an image circle large enough to cover large format film or plates. Lens design was more conceptual in the early days of lens design since computational lens design had not been developed. Jul 02, 2016 biogon lenses arent ideal in terms of their lens design for shooting with digital cameras. The contaxmount lens has less distortion, due to its design placing the rear nodal point closer to the image plane.

Really, if youre in to landscape photography with a 35, this is the lens you want. Nasse wrote a series of technical papers for carl zeiss detailing their modern lens history and genealogy. On smaller format cameras the image circle generally covers only the intended film size with little room to spare. Certain design elements of the zeiss distagon 35mm lens can provide you with some advantages in the field. The range of gmount lenses comprises a complete set the 16mm hologon, the 21mm biogon, the 28mm biogon, the 35mm planar, the 45mm planar, the 90mm sonnar, and the 3570 variosonnar.

In his three part series, he discussed 5 lens designed that changed the world. You are getting all of the build quality and performance in a much smaller, lighter but not less expensive package in the sony emount loxia lens. However it was not until 1954 that the lens was manufactured. A dynamic, wide complement to the standard planar 50 lens, it is composed of 8 optical elements and is based on the symmetrical carl zeiss biogon lens design concept. The reason for this is that the rear elements of the lens project so far into the body of the camera that the angle of light leaving the lens and hitting the outer areas of the sensor is too oblique. Symmetrical vs asymmetrical lens design leica m lenses. The hologon is a modification of the biogon lens design. An exciting, very wide complement to the biogon 35 wide standard lens. Apr 24, 2019 the range of gmount lenses comprises a complete set the 16mm hologon, the 21mm biogon, the 28mm biogon, the 35mm planar, the 45mm planar, the 90mm sonnar, and the 3570 variosonnar. With practical zemax examples joseph geary, are all great books, just to name a few. The biogon opened up new visual territories that photogs had literally never seen before and soon became a favorites for the pros who could afford it.

The moderate wide angle and the creative possibilities of manual focus make the zeiss loxia 235 a perfect storyteller. The percival philosophy is similar to that used in modern spectacle lens design. Ever since the lens design principles by zeiss are given special names, which nowadays, some for more than a century later, are still used. This makes the contaxmount lens less suitable for metering with leica m, and unsuitable for use with the ccd of the leica m9. Of this batch of seven lenses, the original g1 could accept only. The zeiss loxia 35mm f2 biogon t lens for sony e mount offers an extended field of view. Lens design fundamentals rudolf kingslake, applied optics and optical design part 1 and part 2 a. This wideangle lens is an ideal companion for the 50 mm planar standard lens. Anyone can master the fundamentals of game designno technological expertise is necessary. It was notable for its relatively light weight, simple design and fast aperture the name sonnar is derived from the german word sonne, meaning sun. The ultimate guide to lens design using the classic. This title is directed primarily towards health care professionals outside of the united states. This edition has been thoroughly updated and contains integral coverage of soft lenses. This zeiss is a little better optically than the leica elmaritm 28mm f2.

Ray tracing and aberration theory was invented during this period. In fact, its probably one of the best lenses ive ever used for capturing a really lifelike picture. Zeiss uses a rather complex but very successful 7 element design, compared to. The two gseries cameras have titaniumclad bodies and use the contax gmount, an electronic autofocus mount. In fact, this zeiss is sharper than the leica summicronm 35mm f2 asph in the center, and this zeiss also has much less distortion than the leica asph the biggest gotcha with. Biogon series was created by ludwig bertele in 1935. Rudolphs original was a sixelement symmetrical design.

Unless zeiss is planning to introduce this lens in nikon s mount that used 43 x 0. The zeiss loxia 35mm f2 biogon quickly shows part of what makes the loxia series special when you compare it to the milvus 35mm f2 for nikon and canon dslrs. The solid, allmetal design, including the easytogrip focus ring, aperture ring, mounts, and threads are part of the nocompromise highend craftsmanship you expect from a top of the line lens. The zeiss planar is a photographic lens designed by paul rudolph at carl zeiss in 1896. Tessar 1902, planar 1896, sonnar 1929, biogon 1951 and distagon 1958. Etsy is the home to thousands of handmade, vintage, and oneofakind products and gifts related to your search. Like other lenses in the series it sports a 52mm filter thread in metal. The carl zeiss c biogon t 2,835 zm is a compact lens for rangefinder cameras with a moderate wideangle field of view.

Large format lenses are typically used in large format cameras and view cameras photographic optics generally project a circular image behind the lens. Cameraquest home shopping cart price list camera articles i buy wants repairs books adapters. The former is the case mostly in reproduction use when the image has the same or similar size as the subjecti. Jan 17, 2006 the now familiar biogon design was a later development postww ii, coincidentally also developed by bertele but not until 1951 when bertele was no longer employed by zeiss but did this project under contract. Applying this bit of a basic understanding of optical design to looking at zeisss zm lens line up on paper at least i initially came to the.