It can also be used upon 6x9 cameras, and even 8x10 cameras at 2. Identification of the best azimuth and application in reverse position means that they can be deployed in a customeroriented way. Design for near and distant viewing distances is essentially identical. And this is all human based lens design where the fun part, and most important part, comes before we do any computer optimization. Makro symmar, micro symmar and apocomponon lenses are designed for industrial machine vision applications and satisfy even the most stringent requirements of next generation 12k line scan applications.
Schneider aposymmarl lens 210 mm sign in to comment. Basic principles about designing paraxial systems are introduced. Chapter 16 handbook of optics photonics research group. In conventional lens design, resolution is limited by the spot size of the lens. We will authorize your payment method for the full advertised amount when you order this item, but you will not. Furthermore, each film format has its own minimum requirement for coverage. Schneider apo symmar l lens 210 mm sign in to comment. As i described in a paper at the 2014international optical design conference, this class of optics is interesting be they are of a reasonable complexity that the designs are likely to be instructive, they offer a small range of design constraints because of the standardization of cmos imager sizes.
The goerz apochromatartar, schneider gclaron, nikon apo nikkor and rodenstock apo ronar lenses fall into this category. Schneider macro symmar hm macro lens 180 mm sign in to comment. They are great value for money with no noticeable difference to the later apo version which simply reflect the newer green glass as i understand it. This lens has much less astigmatism than either conventional triplets or tessars and can. The xenar uses a tessar type optical formula, originally designed by paul rudolph for zeiss. I took everything straight from the pages, so if theres anything wrong, it should be original to schneiders webpage e. Angle of coverage, on the other hand, can be defined as the angle formed by the entire image circle projected onto the film by the lens. Super symmar xl compared to digitar i realized after paul sent me a message that i didnt followup on my testing. Design examples of several widely used modern lenses are provided. The symmar was a convertible lens, meaning that one could remove either the front or rear half of the lens which were identical, and the remaining three lens. Due to the principle used, this method requires a very careful choice of camera and an optimally adapted lens in order to achieve maximum system performance. A simple lens like the lens in a pair of glasses forms an image at a distance of f behind the lens for an object at infinity where f is the focal length. The best combination of quality services, vast selection, knowledgeable staff and competitive pricing.
When it comes to optical and precision mechanical components for machine vision, we set the standard. The leica 50mm f2 summar has minor falloff at f2, and none by f4. The people at lightmachinery are veterans of the laser and optics world with many years of experience in the areas of optical design, high power lasers, optical fabrication, laser systems, metrology, thin film coatings and custom machinery fabrication. Alternatively, three macro adapters of 16mm, 34mm and 52mm length are available to effectively convert regular lenses to closeup lenses on the alpa. Rather, schneiderkreuznach combines extensive experience in lens construction with the most modern computational, design, manufacturing, and testing methods to achieve extraordinary competence, which is the basis for the highest possible level of quality. Kenneth lee gallery a few favorite large format lenses. If you have a sinar shutter, you can use them asis. A new generation of aspheric taking lenses of a very compact design. In his three part series, he discussed 5 lens designed that changed the world.
The symmar s was schneiders general purpose lf lens in the approximately the 1970s and 1980s. This lens shade fits several computar lenses of various focal lengths from 150mm up to. Spacing adjustments can be included for additional precision. This is pretty funny, because most of leicas bellyaching about why you needed to buy the newer lenses it designed to replace this lens were based on fud trying to scare you that newer lenses had larger elements to fix the edge falloff of this lens. A practical guide to lens design focuses on the very detailed practical process of lens design. This lens is characterized by a triplet construction followed by a rear element that is strongly meniscusshaped, convex to the image plane. Thorlabs fresnel lenses offer light focusing and collimation without the bulk associated with traditional lenses. The 120 makrosymmar hm has been discontinued on the schneider germany site but the large format version 120 makrosymmar hm is still listed as still available on the us schneider distributor, schneider optics. Zoom lens design of mobilephone camera with globalexplorer.
The macrosymmar hm is a variation of the symmar design, engineered for 1. But these are just minimal figures, required when the lens axis is aligned with the center of. Graphic cameras were made in 214x314, 314x414, 4x5, and 5x7 film sizes, either with speed or without a rear focal plane shutter century, crown, and super. Rather, schneiderkreuznach combines extensive experience in lens construction with the most modern computational, design, manufacturing, and stringent testing methods which assure the highest level of quality. A standard long lens will often have the same design as the normal lens for that camera. Click on document introduction to lens design with practical zemax examples pdf. Long lenses for large format cameras are not necessarily telephoto designs. One method adds shims to adjust for measured errors. The 80 mm is a 6element, 4group lens with a 47 angle of coverage, while the other lenses in the line are 8element, 4group designs with 55 of coverage. A plasmattype design, it was the sucessor to the symmar and the predecessor to the aposymmar and the current aposymmarl. They generally open to f9 and are thus comparatively small and light.
Spreadsheet of schneider vintage lens data with the information down, i decided having everything in one place would be easier. Angle of coverage is directly determined by lens design, not focal length. We delete comments that violate our policy, which we encourage you to read. All are for folded zooms, which provide an interesting study. The symmar has an angle of view of 65 at full aperture, which increases to. We present a new approach to increase sbp the use of computations to correct for geometrical aberrations. A plasmattype design, it was the sucessor to the symmar and the predecessor to the apo symmar and the current apo symmar l.
One thing that struck me was that the design is similar to one of the most common large format lenses used by commercial photographers in the 1960s and 1970s, the schneider symmar. In progressive lens design a progressive lens is designed not only to restore a presbyopes ability to see clearly at all distances but also to optimally respect all physiological visual functions, in particular. You can see how a new design can evolve around a simple starting point idea or structure. Schneider macrosymmar hm macro lens 180 mm specs cnet. Explanation of triplets from fundamental optical design. Introdution recently, global optimization algorithm is widely applied in optical design, regardless of fixed focal lens or zoom lens system. Symmar lenses have a firm place in professional photography. From simple thin lens design, clear overview of optical aberrations, designing in zemax and professional production and tolerancing, this book can take you from start to finish in the world of optical engineering. An interesting new wideangle lens type is a fourcomponent form found commonly on the socalled compact 35mm cameras. View camera technique this complete collection of lens articles will be available on cd, in pdf format.
And unlike the componon enlarger lenses ive seen, this lens has a flared, removeable rear component for mounting on a lens board. Spreadsheet of schneider vintage lens data large format. A scaling law for computational imaging comp photo lab. This lens has superb optical performance in a small package, while providing a large image circle. Objective lens atm, optics and diy forum cloudy nights. It is a 6element, 4group, symmetric design with a 70 angle of coverage. Field guide to lens design 2012 bentley publications. Lenses in a photo system, the lens is most critical lenses are characterized by prime vs. Etymologically, the word tessar is from the greek word tessares, meaning four, which denotes the number of elements in its design. The same lens will form an image at 2f behind the lens for an object 2f in front of the lens. A tutorial for designing fundamental imaging systems.
What are the constructional differences between a macro. Zoom lens design of mobilephone camera with global. But this lens covers medium format and is designed to work with a 5 m sensor the d810 has a 4. The 3x4s and 5x7s are somewhat rare and collectible, but what about the 2x3s. For a lens with aberrations, spot size increases linearly with the scale of the lens. The retinas foveal area permits sharp vision of details at any distance within a very small field. The 120 makro symmar hm has been discontinued on the schneider germany site but the large format version 120 makro symmar hm is still listed as still available on the us schneider distributor, schneider optics. The design parameters of optical system are typically to form a complicated multidimensional. Not cheap, but one lens that is worth what ever you have to pay for it. A comprehensive guide to camera lens design and zeiss. The difference versus a commonuse large format lens is stunning.
For field work this is a lens that simply cannot be beat. The process of designing lenses is both an art and a science. Schneider kreuznach is the abbreviated name of the company jos. I have 2 schneider symmar s multicoated lenses 150mm f5. 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.
Principles of atoric lens design darryl meister, abom lens talk sola technical marketing vol. All large format camera lenses are designed to be used with all photographic films. It is an apochromatic design, and incorporates costly uld ultralow dispersion glass elements for the highest possible quality. There are some limitations that are imposed on the design of camera lenses. Introduction to lens design with practical zemax examples pdf. The values in the tables below show the resolution in lpmm at the stated mtfs, 50% and 10%. Therefore the term heliartype often refers to hartings 3rd design fig. Page 1 schneider kreuznach pc tiltshift lenses user manual pcts superangulon 2. This is a truly oustanding lens, that really has no competition. Tessar 1902 only 4 elements in 3 groups make up the asymmetrical design. This lens is designed to cover the 62mm image circle of so this lens should be able to cover medium format digital camera like the fujifilm gfx 50s sensor 8256 x 6192 pixels, 43.
Every step from setup specifications to finalizing the design for production is discussed in a straight forward, tangible way. Lens design, camera zoom lens, cmos sens or, optimization, global explorer, mobilephone camera lens 1. Another method enters asbuilt data into a lensdesign program and then machines the spacers to compensate for errors and optimize performance. As an example, contributions of each of the lenses in a thin lens design are listed in table 10. Further, 50% of these wearers have corrections with over 0. Occasionally, i tested a lens only at 1 or 2 apertures. Like their plasmat cousins sironar, symmar, etc they provide excellent correction and wide coverage. The sr120 industrial makro symmar is marked as a 5. It must be noted that the angle of coverage is affected by the fstop of the lens and.
Optical excellence for analog and digital photography made in germany. Current methods use optical elements which operate only on the full. We can see that for each of the even aberrations, s 1, s 3, s 4, and c 1, the outer, positive lenses have a positive coefficient, and the inner, negative, lens has a negative coefficient. Lens barrel with diaphragm for 210mm f9 computar with lens shade, flange and gel filter holder. It was a popular lens and made for many years, so there are a lot of them out there. Large format lenses from carl zeiss oberkochen 19501972. Due to its mechanical stability and the robust vmount interface enabling.
It takes 52mm filters, and is a very very nice lens, one of my two favorites for 4x5. As far as the age goes, i think its from the early 1950s, since the shutter speed progression on the compur scale includes 15, 110, 125, instead of the modern 14, 18, 115,etc. Many other papers have compared and contrasted different solutions to the same lens design problem. However, the optical design of these lenses differed from that currently used. A tutorial for designing fundamental imaging systems koichi taniguchi opti 521 distance learning college of optical science university of arizona november 2009,, abstract this tutorial shows what to do when we design optomechanical system for imaging system. The almost symmetrical design of the symmar permits working. The lens was removed from this barrel and put into a shutter. Design dates of the new zeiss lenses for view cameras start with a 105mm f3. Although i have taken a great deal of effort to assure accuracy, the user of any of. Nasse wrote a series of technical papers for carl zeiss detailing their modern lens history and genealogy. In lens design with large computers, proceedings of the conference, institute of optics, government superintendent, rochester, new york.
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