File:Camera lucida 6.jpg
Original file (1,417 × 992 pixels, file size: 713 KB, MIME type: image/jpeg)
Captions
Summary
[edit]DescriptionCamera lucida 6.jpg |
English: View through a camera lucida. The image of the drawing hand is real, the image of the candles is virtual. The image here is near perfect and was realized by illuminating the scene, in a darkend room.
A camera lucida is an optical device used as a drawing aid by artists. The camera lucida performs an optical superimposition of the subject being viewed upon the surface upon which the artist is drawing. The artist sees both scene and drawing surface simultaneously, as in a photographic double exposure. This allows the artist to duplicate key points of the scene on the drawing surface, thus aiding in the accurate rendering of perspective. At times, the artist can even trace the outlines of objects.Nederlands: Beeld verkregen door een camera lucida. Het beeld hier is uitzonderlijk scherp omdat de scene fel verlicht werd in een verduisterd lokaal.
Een camera lucida was een instrument bestaande uit een verstelbare stang, die met een klem aan de tekentafel werd vastgemaakt. Aan de bovenzijde was een in metaal gevat prisma bevestigd. Door dit prisma juist af te stellen, werd in de gewenste afmetingen het tafereel of het object op tekenpapier geprojecteerd. Het apparaat was vooral in de achttiende eeuw in omloop. |
|||
Date | 12 October 2007 (according to Exif data) | |||
Source | Own work | |||
Author | Ad Meskens | |||
Permission (Reusing this file) |
Notification/copy of publication is appreciated
|
Licensing
[edit]- 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.
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 image has been assessed under the valued image criteria and is considered the most valued image on Commons within the scope: drawing of a still life using a camera lucida. You can see its nomination here. |
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 10:38, 31 January 2009 | 1,417 × 992 (713 KB) | Ad Meskens (talk | contribs) | {{Information |Description={{en|1=aa}} |Source=Own work by uploader |Author=Ad Meskens |Date= |Permission= |other_versions= }} <!--{{ImageUpload|full}}--> Category:Cameras |
You cannot overwrite this file.
File usage on Commons
The following 2 pages use this file:
File usage on other wikis
The following other wikis use this file:
- Usage on ceb.wikipedia.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.
Camera manufacturer | Panasonic |
---|---|
Camera model | DMC-FZ50 |
Exposure time | 1/4 sec (0.25) |
F-number | f/6.3 |
ISO speed rating | 100 |
Date and time of data generation | 10:54, 12 October 2007 |
Lens focal length | 23.6 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop CS2 Windows |
File change date and time | 21:06, 30 January 2009 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 10:54, 12 October 2007 |
Image compression mode | 4 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Color space | sRGB |
Sensing method | One-chip color area sensor |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 200 mm |
Scene capture type | Night scene |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |