Difference between revisions of "Weston"

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|image_text= Weston Master II<br>with incident light ''invercone''
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|image_text= Weston Master II<br />with incident light ''invercone''
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|image_by= poltag
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|image_rights=with permission
 
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'''Sangamo Weston''' was a company that made [[light meter]]s, among much other electrical equipment. It is particularly known for the '''Weston Master''' series of [[selenium meter]]s.
 
'''Sangamo Weston''' was a company that made [[light meter]]s, among much other electrical equipment. It is particularly known for the '''Weston Master''' series of [[selenium meter]]s.
  
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Weston was founded by Edward Weston, who held many patents for electrical inventions, from permanent magnets through cellulose manufacturing, dynamos, arc & filament lights and the magnetic-drag speedometer to electrical measurement instruments (and even US 895218 - a fruit box!)<ref>[http://chem.ch.huji.ac.il/history/weston.htm Edward Weston short Biography]</ref>  Weston's son, Edward Faraday Weston, applied for a U.S. patent on the first Weston Exposure meter, granted as No.2016469 in October 1935.<ref>[http://weston.ftldesign.com/MulhernLetter/letter.htm Letter from Weston employee] and  
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Weston was founded by chemist Edward Weston—no relation to the famous photographer—who held many patents for electrical inventions, from permanent magnets through cellulose manufacturing, dynamos, arc and filament lights and the magnetic-drag speedometer to electrical measurement instruments (and even US 895218 - a fruit box!).<ref>A short biography of Weston may be found [http://www.njinvent.org/awards/Awards90.html here] within the [http://www.njinvent.org/ New Jersey Inventors Hall of Fame] website, hosted by Stevens Institute of Technology. Wikipedia has a longer [http://en.wikipedia.org/wiki/Edward_Weston_%28chemist%29 article] about him.</ref>  Weston's son, Edward Faraday Weston, applied for a U.S. patent on the first Weston exposure meter, granted as No.2016469 in October 1935.<ref>[http://weston.ftldesign.com/MulhernLetter/letter.htm Letter from Weston employee] and the Western Photographic Historical Society [http://www.wphsociety.org/WPHS_XII-12.pdf Photographica Digest, vol.XII no.12] has an article on the Westons and a copy of the patent. See also [http://www.google.com/patents?id=ncNPAAAAEBAJ&dq=2016469 Google Patents: US 2016469 Exposure Meter]</ref> This was a cylindrical case with an electrical meter at one end, and an iris at the other; an adjustable scale around the meter opened and closed the iris, and showed the exposure.
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the Western Photographic Historical Society [http://www.wphsociety.org/WPHS_XII-12.pdf Photographica Digest, vol.XII no.12] has an article on the Westons and a copy of the patent. See also [http://www.freepatentsonline.com/2016469.html FreePatentsOnline: US 2016469 Exposure Meter]</ref>
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This was a cylindrical case with an electrical meter at one end, and an iris at the other;
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Sangamo was originally "Sangamo Electric Co.", in Springfield, Illinois. It set up a British subsidiary in 1921. Sangamo acquired the Weston Electrical Instrument Co. in 1936.<ref>[http://www.radiomuseum.org/dsp_hersteller_detail.cfm?company_id=7371 Sangamo History]</ref>
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an adjustable scale around the meter opened and closed the iris, and showed the exposure.
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Since Weston was one of the first makers of light meters, before film speeds were standardised, Weston had its own [[film speed]] scales.
  
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Sangamo was originally "Sangamo Electric Co.", in Springfield, Illinois, and set up a British subsidiary in 1921.  Sangamo acquired the Weston Electrical Instrument Co. in 1936.
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At some point, Weston products were distributed by [[Ilford]] in the UK. The company was bought out by Schlumberger in 1976, but [http://www.sangamo.co.uk/ still exists], making electrical timers.
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<ref>[http://www.radiomuseum.org/dsp_hersteller_detail.cfm?company_id=7371 Sangamo History]</ref>
 
  
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Since Weston were an early player in the light meter game - before film speeds were standardised, there are Weston [[film speed|film speed scales]].
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The EuroMaster light meter, very close to a Weston design, was later made by a company called [http://www.megatron.co.uk/homepage.html Megatron].
  
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==Meters==
 
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|image= http://farm9.staticflickr.com/8346/8272936771_2db711fb9f_m.jpg
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|image_text= Leicameter - Weston 650 variant
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|image_by= Geoff Harrisson
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|image_rights= wp
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*Weston S461.6 Euromaster
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*Weston 348 Ranger 9
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*Weston 548 Pixie
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*Weston 540 XM-1
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*Weston 550 XM-2
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*Weston 560 Master 6 (by [[Sekonic]])
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*Weston 614
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*Weston 617
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*Weston 617-2
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*Weston 627 (also as Leicameter)
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*[[Weston 650]] (also as Leicameter)
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*[[Weston 650| Weston 650 Senior]]
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*[[Weston Master|Weston 715 / S74 Master (Cine: Bolexmeter)]]
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|image= http://farm3.static.flickr.com/2687/4235208280_bca2df56d4_m.jpg
 
|image_align= right
 
|image_align= right
 
|image_text= Weston Master V
 
|image_text= Weston Master V
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|image_by= Anssi Puisto
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|image_rights= non-commercial
 
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At some time, Weston products were distributed by [[Ilford]] in the UK.
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*Weston 720 Master Cine
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*Weston 735 / S141 Master II
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The company was bought out by Schlumberger in 1976, but [http://www.sangamo.co.uk/web/site/home/RPTS_-_P-Info_Page_1.asp still exists] making electrical timers and switchgear.
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*Weston 736 Master II Cine
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*Weston 737 / S141.3 Master III
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The EuroMaster light meter is now being made by a company called [http://www.megatron.co.uk/homepage.html Megatron].
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*Weston S217.3 Master III Cine
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*Weston 745 / S481.4 Master IV
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*Weston 748 Master V
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*Weston 756
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*Weston 819 Cine
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*[[Weston 850|Weston 850 Junior]]
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*Weston 852 Cadet
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*Weston 853 D/R Direct Reading
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*Weston 854 D/R Direct Reading
  
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==Notes==
 
<references />
 
<references />
  
 
== Links ==
 
== Links ==
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* [http://haardt.net/wmv.htm Weston Master article] by
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* [http://www.westonmeter.org.uk/ Westonmeter.org]
 
* [http://www.butkus.org/chinon/flashes_meters/weston_exposure_meters/weston_exposure_meters.htm  Weston meter manuals] at www.orphancameras.com
 
* [http://www.butkus.org/chinon/flashes_meters/weston_exposure_meters/weston_exposure_meters.htm  Weston meter manuals] at www.orphancameras.com
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* [http://66.49.230.119/flashes_meters/weston_master_v.pdf Weston Master V instruction manual] on Mike Butkus' site
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* [http://www.cameramanuals.org/flashes_meters/weston_master_v.pdf Weston Master V instruction manual] on Mike Butkus' site
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* [http://www.megatron.co.uk/homepage.html Megatron - current manufacturers of EuroMaster]
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* [http://www.megatron.co.uk/homepage.html Megatron - recent manufacturers of EuroMaster]
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* [http://www.google.com/patents?id=ncNPAAAAEBAJ&dq=2016469 Patent 2016469 Exposure Meter]
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* [http://www.google.com/patents?id=ncNPAAAAEBAJ&dq=edward+weston+exposure Patent 2016469 Exposure Meter]
 
 
* [http://www.google.com/patents?id=XEZJAAAAEBAJ&dq=edward+weston+exposure Patent 2046665 Exposure Meter]
 
* [http://www.google.com/patents?id=XEZJAAAAEBAJ&dq=edward+weston+exposure Patent 2046665 Exposure Meter]
 
* [http://www.google.com/patents?id=flZeAAAAEBAJ&dq=edward+weston+exposure Patent 2203209 Exposure Meter]
 
* [http://www.google.com/patents?id=flZeAAAAEBAJ&dq=edward+weston+exposure Patent 2203209 Exposure Meter]
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* [http://www.photo-manuals.com/manual/weston/light-meter Weston Light Meter Manuals: Photo-Manuals.com]
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* [http://www.jollinger.com/photo/meters/index.html Several articles about Weston meters] in James Ollinger's Exposure Meter Collection.
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* [http://www.kpraslowicz.com/2009/04/27/weston-master-ii/ 1950 advertisement for the Weston Master II]
 
[[Category: Meter makers]]
 
[[Category: Meter makers]]

Latest revision as of 05:26, 8 June 2017

2146474949_655f82a9cd_m.jpg
Weston Master II
with incident light invercone
image by poltag (Image rights)

Sangamo Weston was a company that made light meters, among much other electrical equipment. It is particularly known for the Weston Master series of selenium meters.

Weston was founded by chemist Edward Weston—no relation to the famous photographer—who held many patents for electrical inventions, from permanent magnets through cellulose manufacturing, dynamos, arc and filament lights and the magnetic-drag speedometer to electrical measurement instruments (and even US 895218 - a fruit box!).[1] Weston's son, Edward Faraday Weston, applied for a U.S. patent on the first Weston exposure meter, granted as No.2016469 in October 1935.[2] This was a cylindrical case with an electrical meter at one end, and an iris at the other; an adjustable scale around the meter opened and closed the iris, and showed the exposure.

Sangamo was originally "Sangamo Electric Co.", in Springfield, Illinois. It set up a British subsidiary in 1921. Sangamo acquired the Weston Electrical Instrument Co. in 1936.[3]

Since Weston was one of the first makers of light meters, before film speeds were standardised, Weston had its own film speed scales.

At some point, Weston products were distributed by Ilford in the UK. The company was bought out by Schlumberger in 1976, but still exists, making electrical timers.

The EuroMaster light meter, very close to a Weston design, was later made by a company called Megatron.

Meters

8272936771_2db711fb9f_m.jpg
Leicameter - Weston 650 variant
image by Geoff Harrisson (Image rights)
4235208280_bca2df56d4_m.jpg
Weston Master V
image by Anssi Puisto (Image rights)
  • Weston 720 Master Cine
  • Weston 735 / S141 Master II
  • Weston 736 Master II Cine
  • Weston 737 / S141.3 Master III
  • Weston S217.3 Master III Cine
  • Weston 745 / S481.4 Master IV
  • Weston 748 Master V
  • Weston 756
  • Weston 819 Cine
  • Weston 850 Junior
  • Weston 852 Cadet
  • Weston 853 D/R Direct Reading
  • Weston 854 D/R Direct Reading

Notes

  1. ↑ A short biography of Weston may be found here within the New Jersey Inventors Hall of Fame website, hosted by Stevens Institute of Technology. Wikipedia has a longer article about him.
  2. ↑ Letter from Weston employee and the Western Photographic Historical Society Photographica Digest, vol.XII no.12 has an article on the Westons and a copy of the patent. See also Google Patents: US 2016469 Exposure Meter
  3. ↑ Sangamo History

Links

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