Description
The IRIX 11mm f/4.0 Firefly Lens is an extremely wide-angled, Full Frame rectilinear lens with a 126° angle of view, designed for DSLR cameras.
The IRIX 11mm f/4.0 Firefly Lens is an extremely wide-angled, Full Frame rectilinear lens with a 126° angle of view, designed for DSLR cameras. 4 high refractive lenses, 2 ED lenses and 3 aspherical lenses guarantee minimal distortion, as low as 3.13%, making our 11mm f/4.0 lens absolutely unique in its class.
The optical construction of the IRIX 11mm f/4.0 Firefly Lens is superb, meeting the most demanding requirements of modern cameras.
The IRIX 11mm f/4.0 Firefly Lens has 15 elements in 11 groups include three elements of highly refractive glass and two of extra-low dispersion glass. Two aspherical lenses provide extremely high image quality and improve image brightness at the edges, while minimizing distortion and aberration.
The IRIX 11mm f/4.0 Firefly Lens has new special features such as focus lock, infinity click and hyperfocal scale set a new level of manual focus lens functionality. Thanks to sophisticated optical construction and special neutrino coating, colour aberration, ghosting and flare effects have been reduced to the absolute minimum. Reaching its lowest focusing distance of 0.28 metres (0.92 ft) and 9 rounded-shaped aperture blades, the lens stands for supremely smooth out-of-focus areas. The design of the lens allows the use of 95 mm screw-in filters at the front and square gelatin filters at the back of the lens.
Firefly is the standard version equipped with three rubber seals that protect camera mount and focusing mechanism against dust, moisture and accidental water splashes. Ergonomic focusing ring with rubber grip allows to have more freedom when operating the camera. It is the most lightweight lens in its class.
Features
IMAGE SIZE –35mm “Full Frame”
FOCAL LENGTH -11mm
FIELD OF VIEW –126° (diagonal)
FOCUSING RANGE –0.275 m (0.9 ft) – ∞
FOCUSING TYPE –manual with lock function
APERTURE RANGE -f/4.0 – f/22
APERTURE CONTROL –via camera
APERTURE SHAPE –9 rounded blades
LENS CONSTRUCTION –16 elements in 10 groups 4x HR, 2x ED, 3x ASP
FRONT FILTER THREAD –no
REAR FILTER THREAD –30 x 30 mm
BAYONET MOUNT –Nikon, Canon
DIMENSION –118 x 100 mm (4.49” x 4.05”)
WEIGHT –730 g (1.61 lbs) – 790 g (1.74 lbs)
