File:Distance times fstop.jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file ‎(2,722 × 2,358 pixels, file size: 2.43 MB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary[edit]

Description
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 or f-number⋅feet.

Camera: Nikon-Df
Saved file type: 14-bit RAW
Lens: Micro-NIKKOR 55mm f/3.5 macro
Filter: B+W 52mm HTC Kaesemann Circular Polarizer
Scene illuminance: EV 9 (1280 lux)
Aperture: f/22
Shutter: 2 seconds
Sensitivity: ISO 200
Distance (mid): 7 inches
Lighting: Natural indirect plus LED photoflood with diffuser
Avg. diametric crop from original: 63%
Date
Source Own work
Author Greg L

Licensing[edit]

I, the copyright holder of this work, hereby publish it under the following license:
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International 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.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current01:38, 14 August 2017Thumbnail for version as of 01:38, 14 August 20172,722 × 2,358 (2.43 MB)Greg L (talk | contribs)Color balance more blue
04:00, 9 August 2017Thumbnail for version as of 04:00, 9 August 20172,722 × 2,358 (2.18 MB)Greg L (talk | contribs)Brightened
03:48, 5 August 2017Thumbnail for version as of 03:48, 5 August 20172,722 × 2,358 (2.27 MB)Greg L (talk | contribs)Cleaned up better
21:14, 4 August 2017Thumbnail for version as of 21:14, 4 August 20172,722 × 2,358 (2.3 MB)Greg L (talk | contribs)Lightness curve adjusted
19:22, 4 August 2017Thumbnail for version as of 19:22, 4 August 20172,722 × 2,358 (3.82 MB)Greg L (talk | contribs)User created page with UploadWizard

You cannot overwrite this file.

There are no pages that use this file.

File usage on other wikis

The following other wikis use this file:

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.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Distance_times_fstop.jpg&oldid=720211246"