Superzoom

This article is about lenses for single-lens reflex (SLR) cameras. For non-SLR digital cameras with large focal length zoom lenses, see Bridge camera.
Sigma Superzoom 18-200mm/3.5-6.3 DC Lens attached to the Canon EOS 400D.

A superzoom or hyperzoom lens is a type of photographic zoom lenses with unconventionally large focal length factors, typically ranging from wide angle to extreme long lens focal lengths in one lens.[1][2] There is no clear definition of a superzoom lens but the name generally covers lenses that have a range well above the a standard zoom lenses 3x or 4x range, with lenses being 10x, 12x, 18x, or above.[3] The largest ratio for a digital SLR camera lens is held by the Tamron Di-II format (APS-C) 16–300 mm, giving 18.8×,[4] while some bridge digital cameras have even larger zoom ratios more than 80x and the non-detachable lens compact cameras with same sensor size 1/2.3" as the bridge camera have superzoom up to 30×.[5][6] For movie and television use, Panavision holds the record with their 300X (7-2100mm, 23-7000mm 35mm equivalent) HD Lens with Compound Zoom Technology (two or more lenses mounted together).[7]

Due to trade-offs in the optical design, superzoom lenses are noted for having poorer optical quality at the extreme focal length ranges, mostly distortion at max wide angle and long lens ranges.[8][9] The long focal lengths normally have to be combined with image stabilization.[10]

See also

References

  1. ↑ Tom Grimm, Michele Grimm, The Basic Book of Digital Photography: How to Shoot, Enhance, and Share Your Digital Pictures, Penguin - 2009, chapter 4
  2. ↑ J. Dennis Thomas, Nikon D3300 Digital Field Guide, John Wiley & Sons - 2014, page 124
  3. ↑ Tom Grimm, Michele Grimm, The Basic Book of Digital Photography: How to Shoot, Enhance, and Share Your Digital Pictures, Penguin - 2009, chapter 4
  4. ↑ "Tamron introduces the ultimate in high-power zoom lenses, with expanded focal lengths at both wide-angle and telephoto ends of the zoom range, providing the world's first* zoom ratio of approximately 18.8X." (Press release). Tamron Co., Ltd. April 10, 2014. Retrieved July 12, 2014.
  5. ↑ "Nikon P900 vs Sony HX400 Comparison". March 19, 2015.
  6. ↑ "Best superzoom camera". Retrieved December 16, 2013.
  7. ↑ Panavision 300x Zoom Lens Panavision (PDF)
  8. ↑ Jon Sparks, Chiz Dakin, Outdoor Photography, Cicerone Press Limited - 2013, Hardware for the Outdoor Photographer
  9. ↑ DK, Digital Photography Complete Course, Penguin - 2015, page 124
  10. ↑ Chris Gatcum, The Beginner's Photography Guide, Dorling Kindersly Limited/Penguin - 2013, page 107
This article is issued from Wikipedia - version of the 9/8/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.