File:Lenses with different apertures.jpg
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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)
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 20:43, 18 April 2019 | | 3,450 × 2,200 (2.65 MB) | commons>KoeppiK | {{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... |
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