Pentax lens

Helios 44M 4 lens history Regular small-format lens for SLR cameras. The fast six lens anastigmat. Enlightened optics or multi-layer coating. It features the exact match of visual and photographic i...     Helios 44M 4 lens history   Regular small-format lens for SLR cameras. The fast six lens anastigmat. Enlightened optics or multi-layer coating. It features the exact match of visual and photographic image planes.     Helios 44M 4 lens description   Mount - Pentax (lens comes with adapter M42-Pentax (with confirm chip). Angle of view - 40 ° 28 ', Focal Length - 58 mm (58.60 mm),  Relative aperture - 1:2.  Frame size - 24x36 mm, Number of lenses / groups - 6 / 4 Front vertex focal distance - -34.25 mm Rear vertex focal length - 38.05 mm .  Distance from first to last the surface - 39.80 mm .  Light diameter of the first surface - Ø29, 5 mm;     Helios 44M 4 Russian lens сompatible with:     Pentax K10D Pentax K20D Pentax K100D Pentax K110D Pentax K200D Pentax K100D Pentax *ist DL Pentax *ist DL2 Pentax K-x K20D Pentax K-M Pentax K-5 Pentax K-7 and many other cameras with Pentax mount     Helios 44M 4 Russian lens photos example (Fantastic Bokeh):                                                  

    Helios-44m-5 lens history   Helios 44m-5 standard lens for small-format SLR cameras. Aperture six-lens anastigmat. Coated optics and multi-layer coating. Differs exact match visual and photographic image plane. Is based on the lens Biotar 2 / 58 (Carl Zeiss Jena), in the beginning was called "BTK" - "BioTar Krasnogorsk. The most massive lens CMH, one of the most popular lenses in the world. Available in many varieties and options.

The prototype was Helios 44m lens is Zeiss Biotar 2 / 58. Even earlier predecessor was born in 1896 Planar. It is a versatile high speed lens. It can be used as kit lens, portrait lens, landscape lens, macro lens (including the rings). The lens in the embodiment of screw in the M42 costs about 25-75 dollars. Since this lens is fairly inexpensive, then it often makes eyeglass monocle (Lensbaby).   Advantages: bright, imperfect, but a nice bokeh.   Helios 44m lens was produced including a bayonet to (Pentax, he's Asahi), a 42-th thread hadindices between 2 and 7 and just Helios-44 Helios 44M. There were the usual and MC versions. The best resolution have Russian lens MC Helios 44M 7, MC Helios-44M-6. The most common Helios 44m, Helios 44 2.         Helios 44m lens history   Helios 44m - Regular small-format lens for SLR cameras, DSLR cameras. The fast six lens anastigmat. Enlightened or multicoated optics illumination. It features the exact match of visual and photographic image planes.     Helios 44M lens description   Mount - Pentax (lens comes with adapter M42-Pentax (with confirm chip) Angle of view - 40 ° 28 ', Focal Length - 58 mm (58.60 mm),  Relative aperture - 1:2.  Frame size - 24x36 mm, Number of lenses / groups - 6 / 4 Front vertex focal distance - -34.25 mm Rear vertex focal length - 38.05 mm .  Distance from first to last the surface - 39.80 mm .  Light diameter of the first surface - Ø29, 5 mm;     Helios 44M Russian lens сompatible with:     Pentax K10D Pentax K20D Pentax K100D Pentax K110D Pentax K200D Pentax K100D Pentax *ist DL Pentax *ist DL2 Pentax K-x K20D Pentax K-M Pentax K-5 Pentax K-7 and many other cameras with Pentax mount     Helios 44M Russian lens photos example (Fantastic Bokeh):                                                  

Industar lens history   industar-50-2 russian lens the main camera russian lens types Sharp, Zenith, Crystal, which replaced the Industar-22. 4 lens enlightened anastigmat type "Tessar" in threaded frame with a retractable or nevydvigayuschimsya tube. Equipped with iris. For its time, had a high-resolution with a well corrected chromatic aberration.    

Industar-50-2 3.5/50mm lens history   industar-50-2 russian lens the main camera russian lens types Sharp, Zenith, Crystal, which replaced the Industar-22. 4 lens enlightened anastigmat type "Tessar" in threaded frame with a retractable or nevydvigayuschimsya tube. Equipped with iris. For its time, had a high-resolution with a well corrected chromatic aberration.       Russian lens industar 50-2 - recommended for all types of photography, including color and reproduction. Was also used in the enlarger.   Lens industar 50-2 suitable for Russian cameras with M42 thread: Zenith, practice, etc., and with the help of an adapter can be placed on other cameras, including digital Canon Nikon Sony Pentax Olympus and others. Lens industar 50-2 as suitable for the manufacture of the monocle.         Industar-50-2 3.5/50mm lens description    Focal length: 52 mm (52.48 mm); Relative aperture: 1:3.5; Diaphragm scale: from 3.5 to 16; Angle of view(degree):  45 °; Frame size: 24x36 mm; Number of elements / groups: 4 / 3; The amount of diaphragm blades: 7; Limits the scale of the diaphragms: 1:3,5 - 1:16; Focusing, m:  1 m; Filter mount(screw-in): M35.5 x 0.5; Focusing, m: 0,65m to 20m and infinity; Resolution (center/edges):  38/22; Camera mount: Pentax (lens comes with adapter M42-Pentax (with confirm chip)     Industar-50-2 3.5/50mm compatible with   Pentax K10D Pentax K20D Pentax K100D Pentax K110D Pentax K200D Pentax K100D Pentax *ist DL Pentax *ist DL2 Pentax K-x K20D Pentax K-M Pentax K-5 Pentax K-7 and many other cameras with Pentax mount     Industar 50-2 example photos                                          

Industar 61 L Z lens history. Industar-61 L/Z four m42 lenses anastigmat average luminosity with enlightened eyes. Equipped with iris, in the version for SLR cameras - more "jumping" diaphragm.   Industar 61 L Z lens history   Industar-61 L/Z four lens anastigmat average luminosity with enlightened eyes. Equipped with iris, in the version for SLR cameras - more "jumping" diaphragm.   Lens is of Tessar design. It is a moderately fast lens with high resolution and high image quality. The optical components are made of LANTHANUM (that’s what the “L” in its name stands for) glass, which provides for more even resolution at both the centre and edges of the field. The lens is fitted with a diaphragm preselection device. Resolution and colour saturation are excellent. Having the I-61-L/Z is like having an updated Tessar: faster maximum aperture (f/2,8 instead of f/3,5), efficient anti-reflection coating, and modified glass formula make for a very high quality lens. Though it can focus to as close as 0,30 metres, the I-61-L/Z is not a true “macro lens”. It is just a close-focusing lens. Its field isn’t flat enough at close distances to make it a true macro, but it does well enough for most close-up applications. Industar-61-L/Z is normally monocoated. The multicoated version is marked “MC”. Industar 61 L Z lens description   Mount - Pentax (lens comes with adapter M42-Pentax (with confirm chip) Angle of view - 46 °  Focal length - 50 mm Relative aperture - 1:2.8 Frame format - 24x36 mm Number of lenses / groups - 4 / 3 The limits of the scale diaphragms - 1:2,8-1:16 Near focusing limit is - 1.2 m The resolving power of TU (center / edge) - 40/27 lines / mm.        Industar 61 L Z 2.8/50mm SLR сompatible with:     Pentax K10D Pentax K20D Pentax K100D Pentax K110D Pentax K200D Pentax K100D Pentax *ist DL Pentax *ist DL2 Pentax K-x K20D Pentax K-M Pentax K-5 Pentax K-7 and many other cameras with Pentax mount