File:Lenses with different apertures.jpg
From Wikimedia Commons, the free media repository
Jump to navigation
Jump to search
Size of this preview: 800 × 510 pixels. Other resolutions: 320 × 204 pixels | 640 × 408 pixels | 1,024 × 653 pixels | 1,280 × 816 pixels | 2,560 × 1,632 pixels | 3,450 × 2,200 pixels.
Original file (3,450 × 2,200 pixels, file size: 2.65 MB, MIME type: image/jpeg)
File information
Structured data
Captions
Summary
[edit]DescriptionLenses with different apertures.jpg |
English: This pictures shows a lens with focal length of 50 mm and different aperture settings. Changing the aperture by one stop changes the aperture area by a factor of 2 (the area at stop f/1.4 is twice as big as the area at stop f/2.0). Each stop is specified by the diameter of the aperture as fraction of the focal length. At stop f/1.4 the aperture has a diameter of 50 mm/1.4 ~ 35.7 mm. The diameter as well as the fraction changes by a factor of square root two from one stop to the next one.
The lens is a Nikon AF Nikkor 50mm f/1.4D.
Deutsch: Dieses Bild zeigt ein Objektiv mit einer Brennweite von 50 mm und unterschiedlichen Blendeneinstellungen. Ändert man die Blende um eine Stufe ändert sich die Fläche der Blendenöffnung um den Faktor 2 (die Fläche bei Blende f/1,4 ist doppelt so groß wie bei Blende f/2,0). Als Maß für die jeweilige Blendeneinstellung gibt man den Durchmesser der Blende im Verhältnis zur Brennweite an. Bei Blende f/1,4 beträgt der Durchmesser daher 50 mm/1,4 ~ 35,7 mm. Dieses Maß und damit auch das Verhältnis ändert sich von einer Stufe zur nächsten um einen Faktor in der Größe der Quadratwurzel von Zwei.
Bei dem Objektiv handelt es sich um ein Nikon AF Nikkor 50mm f/1.4D. |
Date | |
Source | Own work |
Author | KoeppiK |
Licensing
[edit]I, the copyright holder of this work, hereby publish it under the following licenses:
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
This file is licensed under the Creative Commons Attribution-Share Alike Attribution-Share Alike 4.0 International, 3.0 Unported, 2.5 Generic, 2.0 Generic and 1.0 Generic license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
You may select the license of your choice.
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 20:43, 18 April 2019 | 3,450 × 2,200 (2.65 MB) | KoeppiK (talk | contribs) | {{Information |description ={{en|1=This pictures shows a lens with focal length of 50 mm and different aperture settings. Changing the aperture by one stop changes the aperture area by a factor of 2 (the area at stop f/1.4 is twice as big as the area at stop f/2.0). Each stop is specified by the diameter of the aperture as fraction of the focal length. At stop f/1.4 the aperture has a diameter of 50 mm/1.4 ~ 35.7 mm. The diameter as well as the fraction changes by a factor of square root tw... |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on bn.wikipedia.org
- Usage on ca.wikipedia.org
- Usage on de.wikipedia.org
- Usage on en.wikipedia.org
- Usage on en.wikibooks.org
- Usage on fa.wikipedia.org
- Usage on fr.wikipedia.org
- Usage on ml.wikipedia.org
- Usage on no.wikipedia.org
- Usage on www.wikidata.org
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
JPEG file comment |
---|