Difference between revisions of "User:Shadesofgrey"
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* [[Leica M8]] | * [[Leica M8]] | ||
| − | * Article on series filters, references needed: | + | * Article on series filters, references needed: |
| − | + | '''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. | |
| − | + | 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 This advantageous aspect of series sized filters has been replaced by step-up and step-down rings. While most series size filters had plain metal mounts. Towards the end of the era of series filters several manufacturers started making screw-in series filters that didn't require a retaining ring or hood to hold them in place. If these are used with some lenses the original hood may not fit. (reference needed.) | |
| − | filter in place. | ||
| − | |||
| − | |||
| + | 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. | ||
The diameter of the filter for each series is: | The diameter of the filter for each series is: | ||
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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 | ||
| + | |||
| + | * [http://www.srbfilm.co.uk/pdffulllist.pdf SRB Price List] at [http://www.srbfilm.co.uk ] | ||
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Revision as of 22:50, 2 October 2006
I like cameras. I like using them. I like learning about the technical details. I like repairing and modifying cameras.
Camera interests
Cameras:
Interests:
- rangefinder accuracy
- Camera patents
Works in progress
- Article on series filters, references needed:
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.
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. While most series size filters had plain metal mounts. Towards the end of the era of series filters several manufacturers started making screw-in series filters that didn't require a retaining ring or hood to hold them in place. If these are used with some lenses the original hood may not fit. (reference needed.)
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.
The diameter of the filter for each series is:
Series Diameter (mm) IV 20.6 4.5 25.5 V 30.2 5.5 35.9 VI 41.3 VII 50.8 7.5 57.0 VIII 63.5 IX 82.6
References
Warren, Bruce, 2001, Photography, Thomson Delmar Learning, ISBN 0766817776.
- Filter_(photography) at Wikipedia, this page incorporates material from the Wikipedia page on Oct 2, 2006
To do list
- Leica M8 rewrite
- rangefinder accuracy math
