Minolta Film Cameras Lenses
minolta film cameras lenses
Fisheye lens – Dress shoes manufacturer – china Sport shoes
Types of fisheye lenses
In a circular fisheye lens, the image circle is inscribed in the film or sensor area; in a full-frame fisheye lens the image circle is circumscribed around the film or sensor area.
Further, different fisheye lenses distort images differently, and the manner of distortion is referred to as their mapping function. A common type for consumer use is equisolid angle.
Circular
Image taken using a circular fisheye lens.
The first types of fisheye lenses to be developed were “circular fisheyes” lenses which took in a 180 hemisphere and projected this as a circle within the film frame. Some circular fisheyes were available in orthographic projection models for scientific applications. These have a 180 vertical angle of view, and the horizontal and diagonal angle of view are also 180. Most circular fisheye lenses cover a smaller image circle than rectilinear lenses, so the corners of the frame will be completely dark.
Full-frame
As fisheye lenses gained popularity in general photography, camera companies began manufacturing fisheye lenses that enlarged the image circle to cover the entire 35 mm film frame, and this is the type of fisheye most commonly used by photographers.
The picture angle produced by these lenses only measures 180 degrees when measured from corner to corner: these have a 180 diagonal angle of view, while the horizontal and vertical angles of view will be smaller; for an equisolid angle-type 15 mm full-frame fisheye, the horizontal FOV will be 147, and the vertical FOV will be 94.
The first full-frame fisheye lens to be mass-produced was a 16 mm lens made by Nikon in the late 1960s. Digital cameras with APS-C sized sensors require a 10.5 mm lens to get the same effect as a 16 mm lens on a camera with full-frame sensor.
Fisheye 15 mm (type: equisolid angle), 35 mm film, cropped by slide frame.
Fisheye 10.5 mm Nikkor (type: equisolid angle), APS-C sized sensor, cropped to rectangle.
A full frame fisheye lens for a 35mm camera.
A Peleng 8mm f/3.5 Lens.
Miniature Fisheye Lenses
Miniature fisheye lenses are designed for small format CCD/CMOS imagers commonly used in consumer and security cameras. Popular format sizes are 1/4″ (active area 3.6mmx2.7mm), 1/3″ (active area 4.8mmx3.6mm) and 1/2″ (active area 6.6mmx4.8mm). Depending on the imager active area, the same lens can form a circular image on one imager (e.g. 1/2″), and a full frame on the other (e.g. 1/4″). Sunex makes a series of miniature fisheye lenses for popular imager formats.
Focal length
Sigma currently makes a 4.5mm fisheye lens that captures a 180 degree field of view on a crop body. Sunex also makes a 5.6mm fisheye lens that captures a circular 185 degree field of view on a 1.5x Nikon and 1.6x Canon DSLR cameras.
Nikon produced a 6 mm circular fisheye lens that was initially designed for an expedition to Antarctica. It featured a 220-degree field of view, designed to capture the entire sky and surrounding ground when pointed straight up. This lens is still manufactured by Nikon upon special order, and is used nowadays to produce interactive virtual-reality images such as QuickTime VR and IPIX. Because of its very wide field of view, it is very large and cumbersome – weighing 5.2 kilograms (11 lb) and having a diameter of 236 millimetres (9.3 in). It dwarfs a regular 35 mm SLR camera and has its own tripod mounting point, a feature normally seen in large long-focus or telephoto lenses to reduce strain on the lens mount because the lens is heavier than the camera.
An 8 mm fisheye lens, also made by Nikon, has proven useful for scientific purposes because of its equidistant (equiangular) projection, in which distance along the radius of the circular image is proportional to zenith angle.
Other uses
An image shot with a 16mm full-frame fisheye lens, with a 35mm-format digital SLR, before and after remapping to rectilinear perspective with Panorama Tools
With appropriate software, the curvilinear images produced by a fisheye lens can be remapped to a conventional rectilinear projection. Although this entails some loss of detail at the edges of the frame, the technique can produce an image with a field of view greater than that of a conventional rectilinear lens. This is particularly useful for creating panoramic images.
Some planetariums use a form of fisheye lens to project a two-dimensional film image of the night sky onto the interior of a dome.
Similarly, the IMAX Dome (previously ‘OMNIMAX’) motion-picture format involves photography through a circular fisheye lens, and projection through the same onto a hemispherical screen.
Scientists and resource managers (e.g., biologists, foresters, and meteorologists) use fisheye lenses for hemispherical photography to calculate plant canopy indices and near-ground solar radiation. Applications include evaluation of forest health, characterization of monarch butterfly winter roosting sites, and management of vineyards.
Photographers and videographers use fisheye lenses so they can get the camera as close as possible for action shots whilst also capturing context, for example in skateboarding to focus on the board and still retain an image of the skater.
The peepholes used in doors generally contain fisheye lenses, so as to give a wide field of view. Security cameras often tend to have such lenses for similar reasons.
The first music video to be shot completely with fisheye lens was for the Beastie Boys song “Shake Your Rump” in 1989.
Fisheye lenses for 35 mm cameras
Circular fisheye
Peleng 8 mm f/3.5
Canon FD 7.5 mm f/5.6 (note: not EF mount) (not in production)
Nikkor 8mm f/2.8 lens (not in production)
Sigma 8 mm f/3.5 EX DG (replaces the Sigma 8 mm f/4 EX DG)
Sigma 4.5 mm f/2.8 EX DC Circular Fisheye HSM for APS-C sensors
Sunex 185 deg SuperFisheye 5.6mm f/5.6 for DSLRs
Vemar 12mm f/5.6 Fish-Eye / Ultra-Wideangleircular image on full-frame 135 cameras if the integral hood is in place, 160 degree view. Usually available as a T2 mount for various cameras, but no longer in production.
Full-frame fisheye
AF DX Fisheye-Nikkor 10.5mm f/2.8G ED (full frame on DX sensors, almost circular on FX sensors if integral hood is removed — the image circle is slightly bigger than the frame and there is some cropping at the top and bottom).
MC Zenitar 16mm f/2.8 (Models available: MC Zenitar-K – Pentax mount; MC Zenitar-M – M42 screwmount; MC Zenitar-H – Nikon mount)
Sigma 15 mm f/2.8 EX DG Diagonal Fisheye
Sigma 10 mm f/2.8 EX DC Fisheye HSM for APS-C sensors.
Zoom Tokina 10-17mm f/3.5-4.5 fisheye lens for APS-C sensors
Canon EF 15mm f/2.8
Minolta/Sony AF 16mm f/2.8 Fisheye
Olympus Zuiko Digital ED 8mm f/3.5 Fisheye] for Four Thirds cameras
Pentax DA 10-17mm f/3.5-4.5 ED(IF) — full-frame image for APS-C sensors on K-mount cameras
Samyang 8 mm f/3.5 Fisheye CS for APS-C sensors – also marketed as Bower, Polar, Falcon, Rokinon and the same as the Vivitar 7mm and Opteka 6.5mm lenses. This lens is manual focus and is reported to use stereographic projection
Mapping function
The mapping of a sideways object leads to a picture position displacement from the image center. The manner of this conversion is the mapping function. The distance of a point from the image center ‘r’ is dependent on the focal length of the optical system ‘f’, and the angle from the optical axis ”.
Illustration of the conceptual significance of the r, f, and variables used in the mapping function specification.
Original tunnel to be photographed, with camera looking from inside center to left wall.
Gnomonical
Gnomonical, 40 right pan
Linear scaled (equidistant)
Orthographic[dubious discuss]
Equal area (equisolid angle)
Stereographic (conform)
Normal (non-fisheye) lens:
Gnomonical or perspective: r = ftan(). Works like the pinhole camera. Straight lines remain straight (distortion free). “” has to be smaller than 90. The aperture angle is gaged symmetrically to the optical axis and has to be smaller than 180. Large aperture angles are difficult to design and lead to high prices.
Fisheye lenses can have many different mapping functions:
Linear scaled (equidistant): , where is in radians. Practical for angle measurement e.g., star maps. PanoTools uses this type.
Orthographic: r = fsin(). Looks like an orb with the surroundings lying on < max. 180 aperture angle.
Equal area (equisolid angle): r = 2fsin( / 2). Looks like a mirror image on a ball, best special effect (unsophisticated distances), suitable for area comparison (clouds grade determination). This type is popular but it compresses marginal objects. The prices of these lenses are high, but not extreme.
Stereographic (conform): r = 2ftan( / 2). This mapping would be ideal for photographers because it doesn’t compress marginal objects as much. Samyang is the only manufacturer ever to be making this kind of fisheye lens. This lens is available under different brandnames. This mapping is easily implemented by software.
Other mapping functions (for example Tailored Distortion lenses) are also possible for enhancing the off-axis resolution of fisheye lenses.
All types of fisheye lens bend straight lines. Aperture angles of 180 or more are possible only with large amounts of barrel distortion.
See also
Map projection
References
^ Hill, R. 1924. A lens for whole sky photographs. Quarterly Journal of the Royal Meteorological Society 50:227-235.
^ The formula is , which comes from inverting the mapping function; Dyxum, Gustavo Orensztajn
^ AF DX Fisheye-NIKKOR 10.5 mm f/2.8G ED specification
^ Miniature fisheye lenses
^ Sunex
^ http://www.sigma-photo.com/lenses/lenses_all_details.asp?id=3336&navigator=6 4.5mm F2.8 EX DC Circular Fisheye HSM
^ “Additional Information on Fisheye-Nikkor 6mm f/2.8 lens”. Malaysian Internet Resources. http://www.mir.com.my/rb/photography/companies/nikon/nikkoresources/fisheyes/6mmf28.htm. Retrieved 2008-11-11.
^ “Additional Information on Fisheye-Nikkor 6mm f/2.8 lens: Late 70s”. Malaysian Internet Resources. http://www.mir.com.my/rb/photography/companies/nikon/nikkoresources/late70nikkor/fisheyes/6mmf28.htm. Retrieved 2008-11-11.
^ Sunex
^ SuperFisheye
^
^ AF DX Fisheye-Nikkor 10.5mm f/2.8G ED
^ MC Zenitar
^ Sigma 15 mm f/2.8 EX DG Diagonal Fisheye
^ Olympus Zuiko Digital ED 8mm f/3.5 Fisheye
^ “Samyang 8 mm f/3.5 Aspherical IF MC Fish-eye”. lenstip.com. http://www.lenstip.com/160.1-Lens_review-Samyang_8_mm_f_3.5_Aspherical_IF_MC_Fish-eye-Introduction.html. Retrieved 2009-08-14.
^ Samyang 8 mm f/3.5 Fisheye CS
^ Tailored Distortion lenses
External links
Fisheye projection theory
A list of fisheye lenses
Overview of fish-eye distortion effects
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OUR WEBSITE SEARCHES for the best products on the net on weakly bases and here are the cheapest products at their category.
You can easily buy them from eBay (Safest purchase, and in most case free shipping) just click on the image and enjoy 
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Minolta X-370 35mm Film Camera, MD Rokkor -X 50mm 1.7 Lens, Filter, Flash, bag $49.99 |
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Vintage Minolta AL-F Rangefinder 35mm Film Camera With Rokkor f/2.7 38mm Lens! $25.00 |
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Minolta Maxxum 7000 35mm SLR Film Camera w/ 2800 AF Flash and 28-70mm Zoom Lens $40.00 |
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Vintage 35mm Film SLR Camera Lot of 8 + Some Lenses Minolta SRT 101 Canon AE-1 $43.00 |
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Minolta Maxxum 300si 35mm SLR Film Camera with AF Zoom Lens 28-80 $19.99 |
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Minolta XG-1 35mm SLR Film Camera with 50 MM ROKKOR lens & Maxxum 2800 AF flash $14.99 |
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Lot of 18 Vintage 35mm SLR Film Camera & Lens Minolta Kodak Brownie Balda Sony $66.00 |
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Minolta XG-1 35mm SLR Film Camera w/ 50 mm lens – SR-33 Flash & Minolta Auto 25 $60.00 |
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MINOLTA X-700 35mm FILM CAMERA, FLASH, 50MM & 80-200mm LENSES, MANUALS & MORE $56.00 |
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Minolta XD11 35mm SLR Film Camera with Vivitar Electronic Flash 2000 and Lens $19.50 |
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Minolta XG-M 35mm SLR Film Camera 2 Lens Outfit w/Flash Bag and manual ++ $59.00 |
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Minolta X-570 SLR Film Camera with Rokinon lens and accessories $49.99 |
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Minolta Maxxum 7000 35mm SLR Film Camera – EXTRAS! – LENSES/FILTERS/FLASH! $184.00 |
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Minolta Maxxum 5 35mm SLR Film Camera and lens $10.50 |
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Minolta X-370 35mm SLR Film Camera w/ 200mm zoom lens $49.95 |
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Minolta X-700 MPS with 50 mm 1:1.4 lens Film Camera $50.00 |
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Minolta Maxxum 50 35mm Film Camera uses Auto lenses $18.52 |
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Minolta Maxxum 300si Film Camera – AF 35-70 Zoom Lens & camera bag $50.00 |
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Minolta MD /MC Lens To FujiFilm X-Pro 1 Fuji Film FX X Pro 1 Camera Adapter $29.90 |
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MINOLTA DYNAX 5 CAMERA, 28-80 AF ZOOM LENS, MANUAL, 2 ROLLS FILM $25.00 |
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Vintage Minolta XG1 Film Camera & 3 Lenses, Flash, Electronic Meter, and Bag $29.99 |
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Vintage Minolta SRT-MC II Camera 50mm Lens Film Accessories Case More $19.99 |
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flash gun adapter/ lens adapter ?
i have a flash gun which i used for many years on a minolta film camera x300 and hav just bought a sony alpha a300 is there an adapter that you can fit to the sony a300 that will enable me to use this flash gun and i have two very good lenses that were a lot of money that i also used with the minolta x300 that are the old type fitting and are manual focus is there any adapter that will enable me to use them with the sony alpha i dont think there is but my mate says there is can anybody enlighten me if there is and where you can buy them if they are available
The “General Brand Lens Mount Adapter – Minolta MD Lenses to Sony DSLR” allows infinity focus and is $43.95 at B&H.
Since Minolta changed the configuration of the hot shoe on their DSLRs, Sony still uses it. So you’ll need the “Pearstone FSA-SM Flash Shoe Adapter for Sony DSLR” ($29.95 at B&H) AND the “WEIN Hot Shoe to Hot Shoe Safe-Sync Adapter” ($49.95 at B&H) to use your old Minolta flash unit.
When you mount the older Minolta lenses on your A300 you’ll have no electrical contact or mechanical linkage between the lens and camera. You will have to use “stop down metering” or a hand-held meter. A hand-held meter will be much easier.
When you use your older Minolta flash on your A300 you’ll have to use manual mode. Set the flash sync shutter speed and then refer to the ISO/f-stop/distance scale on your flash and set accordingly.
B&H: http://www.bhphotovideo.com
Minolta MD lenses on Olympus E-PL1