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The EF8–15mm 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.
Canon full-frame cameras have used the EF lens mount since 1987. In comparison with that mount, the RF mount's inner diameter is the same at 54 mm. [1] The RF mount's flange focal distance at 20 mm is much shorter than that of the Canon EF and EF-S mounts at 44 mm. The EF-M mount has a flange focal distance of 18 mm.
The Canon EF 15mm f / 2.8 was a fisheye lens produced by Canon from 1987 to 2011. The lens was compatible with all EF camera bodies but only intended for full-frame configurations, as the fisheye effect is much less pronounced with a cropped sensor . In 2010 Canon announced the EF 8–15mm f / 4L Fisheye USM which replaced the EF 15mm f / 2.8. [2]
Pentax F 17–28 mm f /3.5–4.5 Fisheye – This lens was born for 35 mm full frame film cameras, to take the place of the 16 mm f/2.8 in the AF era. It starts from a 17 mm full-frame (diagonal) fisheye. When it reaches 28 mm, the fisheye effect is almost gone, leaving an overdistorted wideangle image. It was intended as a "special effect ...
It is technically a FL lens, as it requires manual diapragm operation and stopped-down metering. The 15mm f / 2.8 is a full-frame fisheye, rendering a 180 degree field of view across the diagonal of the 35mm frame with the considerable barrel distortion of a fisheye lens. It includes all FD features and may be used with automatic exposure.
The EF 35mm f / 1.4L II USM is a successor of the EF 35mm f / 1.4L USM. It was announced at the 27th of August 2015 and is available since October same year. [1] The EF 35mm f / 1.4L II USM lens is the first lens in Canon line up to use a Blue Spectrum Refractive Optics element (BR element) to reduce the chromatic aberration at the blue end of the spectrum. [2]
The EF-S lens mount is a relatively new offering from Canon, so the selection of available lenses is limited compared to the full EF range, but it is backward compatible with the EF mount, and can therefore still accept all EF lenses. The variety of EF-S prime lenses is very limited in comparison to EF-S zoom lenses, with three primes to nine ...
The EF 17–40mm f / 4L USM lens is a wide-angle lens made by Canon Inc. The lens has an EF mount to work with the EOS line of cameras. Other than the front element, it is sealed against dust and water, and features a diaphragm which remains nearly circular from f / 4 to f / 8. It is one of the few Canon photo lenses that are parfocal. [1]