Difference between revisions of "Series filters"

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'''Series filters''' are an older type of lens filter made in several different sizes or ''series''. Many cameras and lenses from the 1930s through the late 1970 use Series Filters. These glass or optical resin  filters are round usually in a metal mount distinguished by the absence of threads. Series Filters were an early attempt at standardization where a camera user could use one size of filter on similar sized lens from different manufacturers.  
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|{{Flickr_image
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|image_source= http://www.flickr.com/photos/vox/5454525069/in/pool-camerawiki
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|image= http://farm6.static.flickr.com/5215/5454525069_c05539da89.jpg
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|image_align= right
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|image_text= Adapters were available in bayonet, push-on, or threaded styles
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|image_by= Voxphoto
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|image= http://farm6.static.flickr.com/5098/5454525073_a32c2b7b37.jpg
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|image_align= right
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|image_text= The 3 parts of a Series filter set
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|image_by= Voxphoto
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|image_rights= non-commercial
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|image_source= http://www.flickr.com/photos/vox/5454525063/in/pool-camerawiki
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|image= http://farm6.static.flickr.com/5091/5454525063_a96bddcfd7.jpg
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|image_align= right
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|image_text= One set of filters, adapted to four lens sizes
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|image_by= Voxphoto
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'''Series filters''' are a type of lens [[filter]] made in several different sizes (or ''Series''; see the table below). The filter Series were an attempt at standardization: the camera user could use the filter glass from the same Series on a range of similar sized lenses, needing only a different adapter for each lens.  
  
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The filter is attached to the lens between two thread rings or a two-part lens hood to hold a series filter in place. Adapters were used to fit larger series-sized filter to lenses of smaller diamter. This advantageous aspect of series sized filters has been replaced by step-up and step-down rings.   
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Series filters are round glass or optical resin filters, usually in a metal mount distinguished by the absence of [[filter thread|threads]], or sometimes completely unmounted. The filter is mounted by placing it in an ''adapter''. It is held in the adapter either by a threaded ''retaining ring'' or by a threaded [[lens hood]] that also functions as a retaining ring. The size of the "front" of the adapter is determined by the Series, but the size and style of the "back" of the adapter is chosen to suit a particular lens or camera. Adapters were made in many sizes and in both push-on and threaded configurations. Photographers could obtain an adapter for each lens, permitting one set of filters to be used on more than one camera. "Series to Series" adapters were used to fit larger series-sized filter to lenses of smaller diameter.   
  
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The sizes in the series filters are identified by a number or by the diameter of the filter (such as series 63 or 93). The number is usually in roman numerals for integers and in arabic numerals for half sizes. The series number is often stamped into the mount on their circumference.
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The sizes in the series filters are identified by a number. The number is usually in Roman numerals for integers and in Arabic numerals for half sizes. The series number is often stamped into the mount on their circumference. The original roman numeral sizes were measured in inches, but some manufacturers (such as Hasselblad) expressed Series VIII as "Series 63," its millimeter equivalent.
  
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The diameter of the filter for each series is:
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The diameter of the filter for each series is as shown in the table below.<ref>Warren, Bruce, 2001, ''Photography'', Thomson Delmar Learning, <nowiki>ISBN</nowiki> 0766817776.</ref>
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!  Series !! Diameter (mm)
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|-bgcolor="#CCCCCC"
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!  '''Series''' !! '''Diameter (inch)''' !! '''Diameter (mm)'''
 
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|  IV || 20.6
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|  IV || 13/16 || 20.6
 
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|  4.5 || 25.5
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|  4.5 || ~ ||25.5
 
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|  V || 30.2
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|  V || 1 3/16 ||30.2
 
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|  5.5 || 35.9
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|  5.5 || ~ || 35.9
 
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|  VI || 41.3
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|  VI || 1 5/8 || 41.3
 
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|  VII || 50.8
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|  VII || 2 || 50.8
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|-
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|  7.5 || ~ ||57.0
 
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|  7.5 || 57.0
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|  VIII || 2 1/2 ||63.5
 
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|  VIII || 63.5
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|  IX || 3 1/4 ||82.6
 
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|  IX || 82.6
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|  X || 4 1/2 ||114
 
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<br style="clear:both;"/>
  
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==Notes==
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<references />
  
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=== References ===
 
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Warren, Bruce, 2001, ''Photography'', Thomson Delmar Learning, ISBN 0766817776.
 
  
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* [http://en.wikipedia.org/wiki/Filter_(photography)#Series_filters Filter_(photography)] at [http://en.wikipedia.org/ Wikipedia], this page incorporates material from the Wikipedia page on Oct 2, 2006
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==Links==
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* [https://web.archive.org/web/20120704151755/http://silverbased.org/series-filters/ What Are Series Filters?] at [https://web.archive.org/web/20160708190834/http://silverbased.org/ Silverbased] (archived)
  
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* [http://www.srbfilm.co.uk/pdffulllist.pdf SRB Price List] at [http://www.srbfilm.co.uk SRB Film Services]
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[[Category:Lens accessories]]

Latest revision as of 06:46, 18 May 2021

5454525069_c05539da89.jpg
Adapters were available in bayonet, push-on, or threaded styles
image by Voxphoto (Image rights)
5454525073_a32c2b7b37.jpg
The 3 parts of a Series filter set
image by Voxphoto (Image rights)
5454525063_a96bddcfd7.jpg
One set of filters, adapted to four lens sizes
image by Voxphoto (Image rights)

Series filters are a type of lens filter made in several different sizes (or Series; see the table below). The filter Series were an attempt at standardization: the camera user could use the filter glass from the same Series on a range of similar sized lenses, needing only a different adapter for each lens.

Series filters are round glass or optical resin filters, usually in a metal mount distinguished by the absence of threads, or sometimes completely unmounted. The filter is mounted by placing it in an adapter. It is held in the adapter either by a threaded retaining ring or by a threaded lens hood that also functions as a retaining ring. The size of the "front" of the adapter is determined by the Series, but the size and style of the "back" of the adapter is chosen to suit a particular lens or camera. Adapters were made in many sizes and in both push-on and threaded configurations. Photographers could obtain an adapter for each lens, permitting one set of filters to be used on more than one camera. "Series to Series" adapters were used to fit larger series-sized filter to lenses of smaller diameter.

The sizes in the series filters are identified by a number. The number is usually in Roman numerals for integers and in Arabic numerals for half sizes. The series number is often stamped into the mount on their circumference. The original roman numeral sizes were measured in inches, but some manufacturers (such as Hasselblad) expressed Series VIII as "Series 63," its millimeter equivalent.

The diameter of the filter for each series is as shown in the table below.[1]

Series Diameter (inch) Diameter (mm)
IV 13/16 20.6
4.5 ~ 25.5
V 1 3/16 30.2
5.5 ~ 35.9
VI 1 5/8 41.3
VII 2 50.8
7.5 ~ 57.0
VIII 2 1/2 63.5
IX 3 1/4 82.6
X 4 1/2 114


Notes

  1. ↑ Warren, Bruce, 2001, Photography, Thomson Delmar Learning, ISBN 0766817776.


Links

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