“Canon EF 8–15mm lens”的意思、由来-开放百科全书

词条

Canon EF 8–15mm lens

释义

Firsts
References
External links
Specifications

{{Infobox photographic lens
| name = EF 8–15mm {{f/}}4L Fisheye USM
| image = Canon EF 8-15.jpg
| maker = Canon
| feat-is = n
| focusdrive = Ultrasonic motor
| feat-sbf = n
| feat-macro = n
| feat-special = Fisheye, L-Series
| type = z
| application = Special Effect
| flength = 8–15mm
| flength-eq =
| fov = 1
| aperture = {{f/}}4
| groups = 11
| elements = 14
| diaphragm =
| close-dist = 0.16 m (6.2 in)
| max-mag = 0.34 (at 15 mm)
| weight = 540 g
| max-diameter = 78.5 mm (3.1 in)
| max-length = 83.0 mm (3.7 in)
| filter =
| hood =
| lens cap =
| case =
| av-horiz =
| av-vert =
| av-diag = 180°
| start = 2010
| msrp = $1,399
}}

The Canon EF 8–15mm {{f/}}4L Fisheye USM is a fisheye zoom lens for Canon digital single-lens reflex cameras (DSLRs) with an EF lens mount. It delivers 180° diagonal angle of view images for all EOS SLR cameras with imaging formats ranging from full-frame to APS-C, and provides 180° circular fisheye images for full-frame EOS models. It features UD glass for suppression of chromatic aberration and a subwavelength coating for reduced ghosting. It has full-time manual focus for instant switching from AF to Manual operation.

Firsts

This lens broke new market ground in several respects:

It is the first Canon EF lens to offer 180° circular fisheye images for full frame image sensors.^[1]
It is the first zoom fisheye lens for any DSLR to offer a full 180° angle of view in both circular and rectangular image formats.^[2]
It is the first lens by any manufacturer to offer a 180° angle of view for APS-H (1.3x crop factor) bodies.^[1]
Also, it is the first zoom fisheye lens to offer a 180° angle of view on both full-frame and cropped bodies.^[1]

References

1. ^¹²{{cite web|url=http://www.cameralabs.com/reviews/Canon_EF_8-15mm_f4L_Fisheye_USM/verdict.shtml |title=Canon EF 8–15mm f4L Fisheye USM verdict |first=Gordpn |last=Laing |work=Canon EF 8–15mm f4L Fisheye USM |publisher=CameraLabs.com |date=September 2011 |accessdate=September 13, 2011}}
2. ^{{cite web|url=http://www.the-digital-picture.com/Reviews/Canon-EF-8-15mm-f-4-L-USM-Fisheye-Lens-Review.aspx |title=Canon EF 8–15mm f/4 L USM Fisheye Lens Review |first=Bryan |last=Carnathan |work=The-Digital-Picture.com |date=August 16, 2011 |accessdate=September 13, 2011}}

External links

Specifications

Canon EF 8–15mm f/4L Fisheye USM

4 : Canon L-Series lenses|Canon EF lenses|Fisheye lenses|Camera lenses introduced in 2010

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