Difference between revisions of "Judas window"
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The name '''Judas window''' originates in the British English term for the spy-hole in the door of a prison cell (or originally, a church door). | The name '''Judas window''' originates in the British English term for the spy-hole in the door of a prison cell (or originally, a church door). | ||
| − | In reference to [[SLR]] cameras, it generally means an arrangement of relay prisms which allow a direct optical view of the current aperture-ring position, visible above or below the main viewfinder image. A small peepsight on the front of the [[pentaprism]] is required. Depending on ambient illumination | + | In reference to [[SLR]] cameras, it generally means an arrangement of relay prisms which allow a direct optical view of the current aperture-ring position, visible above or below the main viewfinder image. A small peepsight on the front of the [[pentaprism]] is required. Depending on ambient illumination, the clarity of this feature varies. |
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{{Flickr_image | {{Flickr_image | ||
|image_source= https://www.flickr.com/photos/heritagefutures/5178389822/in/pool-camerawiki/ | |image_source= https://www.flickr.com/photos/heritagefutures/5178389822/in/pool-camerawiki/ | ||
|image= https://live.staticflickr.com/1349/5178389822_e1c4364ac5.jpg | |image= https://live.staticflickr.com/1349/5178389822_e1c4364ac5.jpg | ||
| − | |image_align= | + | |image_align= |
|image_text= Front peepsight on [[Pentax KX]] | |image_text= Front peepsight on [[Pentax KX]] | ||
|image_by= Dirk HR Spennemann | |image_by= Dirk HR Spennemann | ||
|image_rights= wp | |image_rights= wp | ||
}} | }} | ||
| + | |- | ||
| + | | | ||
{{Flickr_image | {{Flickr_image | ||
|image_source= https://www.flickr.com/photos/titrisol/4017411940/in/pool-camerawiki/ | |image_source= https://www.flickr.com/photos/titrisol/4017411940/in/pool-camerawiki/ | ||
| − | |image= https://live.staticflickr.com/2770/ | + | |image= https://live.staticflickr.com/2770/4017411940_ce3ba16a43_m.jpg |
| − | |image_align= | + | |image_align= |
|image_text= Engravings for "f/8–f/11" marginally visible<br>at top of Pentax KX viewfinder | |image_text= Engravings for "f/8–f/11" marginally visible<br>at top of Pentax KX viewfinder | ||
|image_by= Pablo Coronel | |image_by= Pablo Coronel | ||
|image_rights= cc | |image_rights= cc | ||
}} | }} | ||
| + | | | ||
| + | {{Flickr_image | ||
| + | |image_source= https://www.flickr.com/photos/titrisol/52240703582/in/pool-camerawiki/ | ||
| + | |image=https://live.staticflickr.com/65535/52240703582_376a09c11d_m.jpg | ||
| + | |image_align= | ||
| + | |image_text=Aperture visible<br>at top of Nikon FE viewfinder | ||
| + | |image_by= Pablo Coronel | ||
| + | |image_rights= cc | ||
| + | }} | ||
| + | |} | ||
Latest revision as of 17:33, 16 March 2023
Glossary Terms
The name Judas window originates in the British English term for the spy-hole in the door of a prison cell (or originally, a church door).
In reference to SLR cameras, it generally means an arrangement of relay prisms which allow a direct optical view of the current aperture-ring position, visible above or below the main viewfinder image. A small peepsight on the front of the pentaprism is required. Depending on ambient illumination, the clarity of this feature varies.
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