Original file (2,722 × 2,358 pixels, file size: 2.43 MB, MIME type: image/jpeg)
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Summary
DescriptionDistance times fstop.jpg |
English: The illuminating power of electronic photoflash devices are often measured as guide numbers, which are a composite unit of measure comprising two factors: aperture ratio and distance. Guide numbers may be, expressed in either of these units of measure: f-number⋅meters/f-number⋅feet.
Camera: Nikon-Df |
Date | |
Source | Own work |
Author | Greg L |
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4 August 2017
image/jpeg
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 01:38, 14 August 2017 | 2,722 × 2,358 (2.43 MB) | Greg L | Color balance more blue | |
04:00, 9 August 2017 | 2,722 × 2,358 (2.18 MB) | Greg L | Brightened | ||
03:48, 5 August 2017 | 2,722 × 2,358 (2.27 MB) | Greg L | Cleaned up better | ||
21:14, 4 August 2017 | 2,722 × 2,358 (2.3 MB) | Greg L | Lightness curve adjusted | ||
19:22, 4 August 2017 | 2,722 × 2,358 (3.82 MB) | Greg L | User created page with UploadWizard |
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Orientation | Normal |
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Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Color space | sRGB |