Image:HD Actinograph.jpg

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[edit] Summary

I took this picture of my Hurter & Driffield's Actinograph, a boxwood/brass/cardboard two-slide slide rule.

[edit] Licensing

Public domain I, the copyright holder of this work, hereby release it into the public domain. This applies worldwide.

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I grant any entity the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

File history

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Date/TimeDimensionsUserComment
current04:28, 30 December 2006721×877 (217 KB)Dicklyon (Talk | contribs) (I took this picture of my '''Hurter & Driffield's Actinograph''', a boxwood/brass/cardboard two-slide slide rule.)

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Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.

Camera manufacturer SIGMA
Camera model SIGMA SD9
Exposure time 1/180 sec (0.0055555555555556)
F-number f/11
Date and time of data generation 00:00, 1 January 2001
Lens focal length 50 mm
Orientation Normal
Horizontal resolution 180 dpi
Vertical resolution 180 dpi
Software used Adobe Photoshop CS Macintosh
File change date and time 22:00, 24 December 2006
Exposure Program Manual
ISO speed rating 100
Exif version 2.2
Date and time of digitizing 16:41, 19 July 2003
Maximum land aperture 2.7
Metering mode CenterWeightedAverage
Flash 0
Color space sRGB
Sensing method One-chip color area sensor
Custom image processing Custom process
Exposure mode Manual exposure
White balance Auto white balance
Focal length in 35 mm film 85
Scene capture type Standard