Super Wide Angle
July 6th, 2009
Why are some lenses called a zoom wide angle-telephoto and some a zoom wide angle and a super wide angle?
and what are the advantages/disadvantages of getting a zoom wide angle or super wide angle over something like a zoom wide angle-telephoto?
That’s always confused me, too. There seems to be too much overlap in the use of the terms. I mean, an 18 mm lens on a film camera would be a “super-wide,” but on a typical Nikon or Canon digital SLR with a 1.5X or 1.6X crop factor, it would become the same as a 27-28 mm lens, which is merely “wide.” It depends on where you want to draw the line between classes, but it also depends on what camera you are putting the lens on, too.
You have to ignore the terms, then, and just learn what the actual numbers mean. Choose your lens by the focal lengths that you want.
See http://www.flickr.com/photos/samfeinstein/476181737/ and read the commentary under the image. This will teach you all you need to know about choosing the focal length or range that you want.
http://www.flickr.com/photos/samfeinstein/1245831147/ is similar.
See also: http://support.nikontech.com/cgi-bin/nikonusa.cfg/php/enduser/std_adp.php?p_faqid=4606&p_created=1054912490&p_sid=CB8iAcGi&p_accessibility=0&p_lva=&p_sp=cF9zcmNoPTEmcF9zb3J0X2J5PSZwX2dyaWRzb3J0PSZwX3Jvd19jbnQ9NSZwX3Byb2RzPTgxJnBfY2F0cz0xNzcmcF9wdj0xLjgxJnBfY3Y9MS4xNzcmcF9zZWFyY2hfdHlwZT1hbnN3ZXJzLnNlYXJjaF9ubCZwX3BhZ2U9MSZwX3NlYXJjaF90ZXh0PWRlcHRoIG9mIGZpZWxk&p_li=&p_topview=1
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Sigma 20mm F1.8 EX DG for Sony Aspherical RF Lens $629 Designed specifically for Sony and Minolta DSLR camerasMacro focusing capability for minimum focusing distance of just 7.9 inches9-bladed iris diaphragm obtains beautiful out of focus image characteristics |
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10-17mm DA f/3.5-4.5 Fisheye Wide-Angle Lens $633.94 Pentax DA 10-17mm f/3.5-4.5 Fisheye Wide Angle Lens FeaturesMounted on the PENTAX *ist D series of digital SLRs, the DA Fish-Eye 10-17mm lens will capture fish-eye imagery with a 180 degree angle of view and a focal length of 10mm as well as super wide-angle performance. Capture images with an expanded perspective including creative deformation of subjects and sharp pan focus that extends throughout the entire frame. The image circle in DA-series lenses is designed to perfectly match the 23.5mm x 15.7mm size of the CCD used in PENTAX digital SLRs to optimize camera performance. The new design also contributes to a drastic reduction in size, weight and production cost, compared to 35mm-format counterparts with similar specifications.Metal PENTAX KAF Lens MountNew water and oil repellant SP (Super Protective) lens coating for easy cleaningExtra-low Dispersion (ED) glass for superior sharpness and color correctionResponsive “Quick-Shift Focus System” allows instant shift from AF to MFThe image circle is designed to match the CCD used in PENTAX digital SLRsWhat’s in The Box:DA 10-17mm Fish-Eye Lens Cap (31517)Rear Lens Cap B (31006) |
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15mm DA f4 Limited Wide-Angle Lens $606.94 Pentax DA 15mm f4 Limited Wide-Angle Lens FeaturesCompact and lightweight, this wide-angle lens is perfect for prime shooters who like to travel light but still demand the highest-quality images. Like all Pentax Limited lenses, it features the unsurpassed durability of high-grade aluminum construction. This lens is ideal for wide-angle applications, including group shots, tight interiors, and sweeping landscapes. Light enough to carry anywhere, this extra wide-angel lens is the perfect addition to your prime lens collection.The smc Pentax DA 15mm F4 ED AL Limited features Extra-low Dispersion (ED) glass and a hybrid aspherical lens element for exceptional sharpness while minimizing chromatic aberration, ghosting and flaring.Pentax SP (Super Protect) coating keeps the elements at bay, while the Quick-Shift Focus System allows for instant switching from auto to manual focus.Built-in, flower-shaped metal lens hood adds no bulk to the lens, and is always available to minimize light flare.The focal length is equivalent to 23mm in the 35mm format.Developed specifically for Pentax digital SLRs.What’s in the Box:Pentax DA 15mm F4 ED AL LimitedLens CapRear Lens CapLens Soft Case |
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17-70mm DA f/4 AL (IF) SDM Wide-Angle Zoom Lens $590.94 Pentax DA 17-70mm f/4 AL (IF) SDM Wide Angle Zoom Lens FeaturesAcquire wide angle, extra zoom and the highest level of optical quality with the smc Pentax DA 17-70mm f/4 ED AL [IF] SDM wide angle zoom lens. The exclusive lens SDM autofocus motor ideally complements current Pentax DSLRs with fast, accurate, quiet focus. Bringing together advanced optical technologies, including aspherical elements, special optical-glass elements, original Pentax SP (Super Protect) lens coatings, along with a Quick-shift Focus System, this new interchangeable lens is superior in terms of contrast, clarity and edge-to-edge sharpness.Extra zoom for a wide range of shooting applications from wide angle to telephoto.Exclusive lens SDM autofocus motor ideally complements modern Pentax DSLR bodies with SDM capabilities.*Pentax SP (Super Protect) coating protects the exposed lens elements.Quick-shift Focus System allows instant switching from auto to manual focus.Developed specifically for Pentax digital SLRs.Focal length equivalent to 26-107mm in 35mm format.*SDM-only focusing lens can still be used with non-SDM Pentax DSLR bodies in manual focus mode. |
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9-18mm M. Zuiko Digital ED f/4.0-5.6 Wide-Angle Zoom Lens – There’s Multiple Choices in Lenes for Your PEN Camera! $699.99 Olympus M. Zuiko Digital ED 9-18mm f/4.0-5.6 Wide-Angle Zoom Lens FeaturesThe super wide-angle M.ZUIKO DIGITAL ED 9-18mm F4.0-5.6 zoom lens (35mm equivalent 18-36mm) offers a 100° angle of view, and overturns the rule that super wide-angle zooms have to be big and heavy. With a length of just 49mm and a weight of just 155g, it less than half the size and 60% of the weight of the ZUIKO DIGITAL ED 9-18mm F4.0-5.6. With its wide angle of view, it makes it easy to include background scenery in group photos, and can be used to create unique images with a sense of dynamically exaggerated perspective. |
