File:Barrage flottant d'algues filamenteuses Canal Esplanade Moyenne-Deûle 2017-06-14a.jpg
Original file (6,000 × 4,000 pixels, file size: 5.34 MB, MIME type: image/jpeg)
Captions
Summary
[edit]DescriptionBarrage flottant d'algues filamenteuses Canal Esplanade Moyenne-Deûle 2017-06-14a.jpg |
Français : Longues algues filamenteuses vertes formant un début de barrage flottant (Aval de la Moyenne-Deûle, Lille, nord de la France)
English: Long green filamentous algae start forming a floating barrier ( Downstream of Middle Deûle in Lille, northern France) |
Date | |
Source | Own work |
Author | Lamiot |
Cette photographie a été prise dans le cadre d'un [[v:fr:Recherche:Mise au point d'un drone subaquatique|projet de recherche (mise au point d'un drone subaquatique) hébergé par Wikiversité, aussi dit "projet Chti'Plouf" (ROV-Drone destiné à inventorier/photographier et filmer la biodiversité subaquatique.
Ce type de milieu en partie envahi par de longues algues filamenteuses pourrait être une zone de test pour un OpenRov et d'autres Rovs ou drones subaquatiques afin d'étudier les moyens d'éviter qu'ils soient gênés par ces algues (qui s'enroulent très facilement autour des hélices) et le manque de lumière.
Licensing
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 19:11, 27 October 2017 | 6,000 × 4,000 (5.34 MB) | Lamiot (talk | contribs) | User created page with UploadWizard |
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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 | NIKON CORPORATION |
---|---|
Camera model | NIKON D7100 |
Exposure time | 1/100 sec (0.01) |
F-number | f/5 |
ISO speed rating | 400 |
Date and time of data generation | 19:10, 14 June 2017 |
Lens focal length | 105 mm |
Copyright holder | |
Width | 6,000 px |
Height | 4,000 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop CS6 (Windows) |
File change date and time | 11:24, 15 June 2017 |
Y and C positioning | Co-sited |
Exposure Program | Not defined |
Exif version | 2.3 |
Date and time of digitizing | 19:10, 14 June 2017 |
Meaning of each component |
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Image compression mode | 4 |
APEX shutter speed | 6.643856 |
APEX aperture | 4.643856 |
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 |
DateTime subseconds | 30 |
DateTimeOriginal subseconds | 30 |
DateTimeDigitized subseconds | 30 |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 157 mm |
Scene capture type | Standard |
Scene control | Low gain up |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
GPS tag version | 0.0.3.2 |
Serial number of camera | 4566240 |
Lens used | 105.0 mm f/2.8 |
Date metadata was last modified | 13:24, 15 June 2017 |
Unique ID of original document | FF18181E15C2C929BEC1F265653609E9 |
IIM version | 37,969 |