Difference between revisions of "Industar 61"
(→Links) |
|||
(18 intermediate revisions by 7 users not shown) | |||
Line 1: | Line 1: | ||
− | + | {|class=floatright | |
+ | | | ||
+ | {{Flickr_image | ||
+ | |image_source= http://www.flickr.com/photos/siimvahur/3029650254/in/pool-camerawiki | ||
+ | |image= http://farm4.static.flickr.com/3178/3029650254_ccd2499834_o.jpg | ||
+ | |image_align= left | ||
+ | |image_text= An Industar 61 L/3 (M39 mount) | ||
+ | |image_by= Siim Vahur | ||
+ | |image_rights= with permission | ||
+ | }} | ||
+ | |- | ||
+ | | | ||
+ | {{Flickr_image | ||
+ | |image_source= http://www.flickr.com/photos/mr_wood/3086835820/in/pool-camerawiki | ||
+ | |image= http://farm4.static.flickr.com/3099/3086835820_dd8455922a.jpg | ||
+ | |image_align= left | ||
+ | |image_text= An Industar 61 L/Z (M42 mount) | ||
+ | |image_by= mr. Wood | ||
+ | |image_rights=non-commercial | ||
+ | }} | ||
+ | |} | ||
− | The Industar 61 | + | The '''Industar 61''' was produced at the [[FED]] factory in Kharkov, Ukraine. It is a "normal" lens for [[M39]] (Leica screw mount) and [[M42]] (Pentax screw mount), with a focal length from 52-55mm, depending on the production run. It has four elements in three groups and the six-blade [[Diaphragm|iris]] provides a range of apertures from f/2.8 to f/22. It is commonly found on rangefinders made by [[FED]] and [[Zorki]]. Its brand name [[Industar]] refers to the class of similar 4-element/3-group lens constructions of the whole [[Soviet Union|soviet]] photo-optical industry. |
+ | The Industar 61 L/D is possibly the most highly regarded lens for Ukrainian [[Leica]] copies apart from the 35mm Jupiter-12. In an L/D or L/Z version of this lens, the L indicates that the lens has (slightly radioactive) Lanthanum in it, and D indicates M39 mount while Z indicates M42 mount. Most examples are multi-coated and are marked as such with MC. Some Industar 61 L/Z bear the logo of [[LZOS]], probably having been made by that company. | ||
− | == Links == | + | Optical formula from [[OPAL]] database |
+ | <div class="toccolours mw-collapsible mw-collapsed"> | ||
+ | <pre> | ||
+ | |||
+ | Cистема-Индустар-61 f'=53 2w=46 1:2.8 | ||
+ | |||
+ | КОНСТРУКТИВНЫЕ ПАРАМЕТРЫ ОПТИЧЕСКОЙ СИСТЕМЫ | ||
+ | N Радиусы Осевые Световые Марки Показатели преломления | ||
+ | пов. кривизны расст. высоты стекол | ||
+ | L= .589300 .434050 .656280 | ||
+ | |||
+ | ВОЗДУХ | ||
+ | 1 19.099 7.500 9.300 СТК9 1.742397 1.761307 1.738057 | ||
+ | 2 57.540 1.500 8.000 ВОЗДУХ | ||
+ | 3 -80.170 1.600 8.000 Ф4 1.624200 1.647216 1.619252 | ||
+ | 4 16.106 3.800 7.400 ВОЗДУХ | ||
+ | 5 84.140 1.500 7.600 ЛФ9 1.579999 1.600239 1.575648 | ||
+ | 6 19.099 7.000 7.700 СТК9 1.742397 1.761307 1.738057 | ||
+ | 7 -40.460 8.070 ВОЗДУХ | ||
+ | |||
+ | ПРЕДМЕТ: Удал. размер Y = -23.00000гр.мнсек S0= .000дптр от вх.зрачка | ||
+ | ИЗОБРАЖ: Близ. размер Y'= .00000 плоск. SI= .000мм от пл.Гаусса | ||
+ | ДИАФР. : ND= 4 плоскость SD= 2.0000 мм передн. апертура= 9.3000 мм | ||
+ | </pre> | ||
+ | </div> | ||
+ | |||
+ | ==Links== | ||
* Matt Denton's [http://www.mattdentonphoto.com/cameras/industar_61_ld.html Industar 61 L/D] lens page | * Matt Denton's [http://www.mattdentonphoto.com/cameras/industar_61_ld.html Industar 61 L/D] lens page | ||
* Matt Denton's HOWTO on [http://www.mattdentonphoto.com/cameras/industar_relubing/index.html cleaning and lubing the I-61] | * Matt Denton's HOWTO on [http://www.mattdentonphoto.com/cameras/industar_relubing/index.html cleaning and lubing the I-61] | ||
+ | *[http://www.pentax-manuals.com/repairs/i6ldservice.pdf Servicing an Industar 61 L/D lens], at [http://www.pentax-manuals.com/ Pentax Manuals] | ||
+ | |||
+ | |||
+ | {{Flickr_image | ||
+ | |image_source= http://flickr.com/photos/gatchell/2178206777/in/pool-camerawiki | ||
+ | |image= http://farm3.static.flickr.com/2322/2178206777_3c0ed29db8_m.jpg | ||
+ | |image_align= left | ||
+ | |image_text= An Industar 61 L/D (M39 mount) | ||
+ | |image_by=Michael Gatchell | ||
+ | |image_rights= creative commons | ||
+ | }} | ||
+ | |||
+ | [[Category:FED]] | ||
+ | [[Category:39mm screw mount]] |
Revision as of 18:16, 12 March 2018
| ||
|
The Industar 61 was produced at the FED factory in Kharkov, Ukraine. It is a "normal" lens for M39 (Leica screw mount) and M42 (Pentax screw mount), with a focal length from 52-55mm, depending on the production run. It has four elements in three groups and the six-blade iris provides a range of apertures from f/2.8 to f/22. It is commonly found on rangefinders made by FED and Zorki. Its brand name Industar refers to the class of similar 4-element/3-group lens constructions of the whole soviet photo-optical industry.
The Industar 61 L/D is possibly the most highly regarded lens for Ukrainian Leica copies apart from the 35mm Jupiter-12. In an L/D or L/Z version of this lens, the L indicates that the lens has (slightly radioactive) Lanthanum in it, and D indicates M39 mount while Z indicates M42 mount. Most examples are multi-coated and are marked as such with MC. Some Industar 61 L/Z bear the logo of LZOS, probably having been made by that company.
Optical formula from OPAL database
Cистема-Индустар-61 f'=53 2w=46 1:2.8 КОНСТРУКТИВНЫЕ ПАРАМЕТРЫ ОПТИЧЕСКОЙ СИСТЕМЫ N Радиусы Осевые Световые Марки Показатели преломления пов. кривизны расст. высоты стекол L= .589300 .434050 .656280 ВОЗДУХ 1 19.099 7.500 9.300 СТК9 1.742397 1.761307 1.738057 2 57.540 1.500 8.000 ВОЗДУХ 3 -80.170 1.600 8.000 Ф4 1.624200 1.647216 1.619252 4 16.106 3.800 7.400 ВОЗДУХ 5 84.140 1.500 7.600 ЛФ9 1.579999 1.600239 1.575648 6 19.099 7.000 7.700 СТК9 1.742397 1.761307 1.738057 7 -40.460 8.070 ВОЗДУХ ПРЕДМЕТ: Удал. размер Y = -23.00000гр.мнсек S0= .000дптр от вх.зрачка ИЗОБРАЖ: Близ. размер Y'= .00000 плоск. SI= .000мм от пл.Гаусса ДИАФР. : ND= 4 плоскость SD= 2.0000 мм передн. апертура= 9.3000 мм
Links
- Matt Denton's Industar 61 L/D lens page
- Matt Denton's HOWTO on cleaning and lubing the I-61
- Servicing an Industar 61 L/D lens, at Pentax Manuals
An Industar 61 L/D (M39 mount) image by Michael Gatchell (Image rights) |