Optical construction of the Samyang 8mm T3.8 Fish-eye CSII DH VDSLR (Video DSLR) DH lens is based on 8mm 1:3.5 Fish-eye CS model, and is specially developed for filming and video purposes with cropped sensor DSLRs and professional camcorders with corresponding mounts.
This CSII version features a detachable lens hood (DH), otherwise is the same (optically and mechanically) as the standard non-removable fixed lens hood version.
The Samyang 8mm fisheye lens T3.8 features an aperture of f3.5 (quoted as T3.8, which is the f/number of a lens corrected for the light loss during transmission through the lens. T-numbers are important in film industry, where TTL metering is not common, and also helps to distinguish between this video version of the lens, and the standard Samyang 8mm F3.5 fish-eye. Optically they are identical, featuring 10 elements in 7 optical groups, one aspherical lens element, and multicoated optics.
Characteristic features of the new model include toothed rings compatible with professional geared follow-focus systems available in the film industry and likewise a toothed smoothly adjustable aperture ring. Such modifications allow for extremely precise control over focus and aperture during video recording / filming. This allows for ultimate manual control of exposure when filming from one scene to another with different light source intensities, such as changing exposure values (EVs) from inside to outside, or even in-camera fade ins etc.
It can be also perfectly used in stills photography, however users may find the standard stepped / clicked aperture version (Samyang 8mm F3.5 fish-eye) possibly more suitable choice to avoid accidental changing of the aperture between shots.
The Samyang 8mm T3.8 fish-eye lens is a manual focus lens, and offers a very large depth of field / depth of focus. The 8mm T3.8 fisheye features removable / detachable lens hood for shooting on full frame cameras to produce the widest image circle as possible.
On full frame cameras with the lens hood removed, it produces a vignetted image, almost circular. This effect is required for user wanting the biggest image / field of view for panoramic software on full frame cameras, and one of the specific reasons Samyang produced this removable lens hood version. The Samyang 8mm Fish-eye lens is ideal for creating panoramas and 360 virtual tours, including full 360 degree images with the correct hardware and various 3rd party panoramic software supplied by other vendors.
Available in 10 camera mounts: Canon, Canon-M, Nikon, Pentax K, Sony A, Sony E, Four-Thirds, MFT, Samsung NX, and Fujifilm X.
The Samyang 8mm fisheye lens offers some of the best optics in a lens for its class, with exceptional value for money. A specialist lens, affordable to every videographer or photographer, particularly suited to panoramic and video use.
Manufacturer Samyang Optics
Model Samyang 8mm T3.8 Aspherical IF MC Fisheye VDSLR CSII DH
Lens type full frame diagonal fisheye (for APS-C Sensors)
Focal length 8mm
Maximum aperture T3.8
Min aperture T22
Angle of view 180 degrees on 1.5x crop APS-C sensors
Min focusing distance 0.3m
No. of diaphragm blades 6
Focus type MF (Manual Focus only)
Lens construction 10 elements / 7 Groups / 1 Aspherical lens
Dimensions 75 x 74.8 mm
Available mounts Canon EF, M, Nikon, Sony A, E, PK, Samsung, Fujifilm, FT, MFT
Lens Hood Detachable Hood (DH)
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