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“BELOMO MS 2.8/17” Photographic Lens
There is nothing comparable with 2.8х17 Lens by criterion of "price-quality" among the products from the competitors. For example, 8/16 lenses of other manufacturers which are being often considered as the analogues of 2.8х17 Lenses have perceptibly smaller image sharpness and considerable chromatic aberrations within the "yellow-dark blue" range. Also our 2.8х17 Lens is more resistant to lateral illumination than 2.8/16 Lenses. The relative aperture «2,8» testifies about sufficient lens aperture which allows to receive a light-coloured image in the viewfinder of the reflex camera and to perform photographing under low illumination conditions. In this respect the lens is not worse than the foreign analogues.
The materials which are being applied for 2.8х17 Lens production - glass and metal, of course, demand care, but not such care as in case of application of plastic which is being mostly applied by foreign manufacturers of the similar lenses. Our lenses can be used more efficiently than those made of plastic and will serve for longer period than plastic lenses. Quality of lenses will satisfy both the requirements of skilled amateur photographers, as well as a considerable part of the requirements of the strict professionals.
Chromatic aberrations which are practically inevitable in similar optical systems are rather insignificant and are at the level of the analogues of the leading foreign manufacturers. At that they can be easily corrected in the corresponding sections of Photoshop program.
"МS 2.8/17" Photographic Lens is a superwide-angle lens of "circular fish eye" type with a coated optics. The distinctive feature of an objective is a field of view of 180° in all the directions which enables to fix on a film all forward semisphere of the object space.
The lens guarantees uncommonness of taking pictures, in the course of operation it is capable to place at a short distance in a frame the subjects which have fascinated you, original natural landscapes, the whole architectural ensembles giving a new image to them. By changing the usual proportions of the subjects the lens allows to receive rather unusual and impressing graphic effects. The lens is also irreplaceable at taking pictures indoors. Due to the great depth of focus the lens is effective at taking pictures of sporting events and running commentaries. Possibility of photographing from short distance enables to apply it for taking pictures of architectural ensembles, panoramic photography and panoramic scenes.
The image being received by the lens represents a circle with a diameter of 24 mm, occupies only a small part of a frame 24x36 and should be inserted into the small part of a frame. The geometrical centres of the image and the frame coincide. Control of a diaphragm is being executed manually. The lens has the device of preliminary adjustment of a diaphragm which increases efficiency at photographing and the complete set of replaceable optical filters.
It can be used with film and digital cameras of various manufacturers. There are original bayonets for use on cameras of “Canon” trade marks (a bayonet "EOS" with a flange focal distance of 44 mm.), “Nikon” (a bayonet "Н" with a flange focal distance of 46,5 mm), “Olympus”, “Zenith” ( bayonet "М42x1" with connection thread М42x1 and a flange focal distance of 45,5 mm) and "Kiev" ( bayonet "Н" with a flange focal distance of 46,5 mm). With application of bayonet "М42x1" with connection thread М42x1 and a flange focal distance of 45,5 mm and a corresponding adapter the lens can be used with film and digital cameras of different manufacturers, including Sony, Minolta, Pentax, Samsung and others.
TECHNICAL DATA:
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Focal distance, mm
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17
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Relative aperture
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01:02,8
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Stopping range
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From 1:2,67 to 1:19,6
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Field of view angle, deg.
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180
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Picture size, mm
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24×36
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Resolution, mm:
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in the centre 50
edges 15
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Minimum distance at taking a picture, m
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0,3
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Transmission factor
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0,85
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Overall dimensions, mm diameter/length
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75×100
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Weight, kg
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0,63
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On special order the complete set of lens can include optical filters by means of which it is possible to achieve various effects of taking pictures. The list of optical filters includes: UF-1×, Zh-1,7×, Zh-1,9×, Zh-1,4×,Zh-2,4×, О-2,8×, К-7×, G-1,2×, Н-2,8.
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