File:Close-up_view_of_a_beetle_Elateroidea.jpg
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Summary
DescriptionClose-up view of a beetle Elateroidea.jpg |
English: Close-up view of a beetle Elateroidea (Lampyridae Ototretinae Stenocladius or Rhagophthalmidae), on a leaf. This specimen measures about 20 mm (0.79 in). This species is bioluminescent, which means it can produce and emit light (here the organ is not active). This image has been created via the focus stacking technique, from 2 long-exposure photographs (0.8 s), using a tripod and a macro lens, in the middle of the night (2 am). In conditions of ambient darkness, the adjustment of the manual focus is difficult. The camera settings (ISO and depth of field) should be done in accordance to the mobility of the organism, which may lead to motion blurs. A soft and diffuse auxiliary lamp has been brought to reveal the details of the animal. Bioluminescent beetles are in regression in the World because of the phenomenon of light pollution, insecticides and climate change. This specimen comes from the island of Don Det, Si Phan Don, Laos, in a wild area far from any major city.
Français : Vue rapprochée d'un coléoptère Elateroidea (Lampyridae Ototretinae Stenocladius ou Rhagophthalmidae), sur une feuille. Le specimen mesure environ 20 mm (0.79 in). Cette espèce est bioluminescente, ce qui signifie qu'elle peut produire et émettre de la lumière (ici l'organe est inactif). Cette image a été réalisée avec la technique du focus stacking à partir de 2 photographies, chacune prise en pose longue (0,8 s), appareil sur trépied avec un objectif macro, en pleine nuit (2 heures du matin). Dans les conditions d'obscurité ambiante, la mise au point précise du focus manuel est particulièrement scabreuse, tout comme celle des réglages photographiques (ISO et profondeur de champ), notamment à cause de la mobilité de l'organisme vivant susceptible d'entraîner des flous cinétiques. Une lampe d'appoint douce et diffuse a été apportée à proximité pour révéler les détails de l'animal. Les coléoptères bioluminescents sont en voie de régression dans le Monde à cause du phénomène de pollution lumineuse, des insecticides et du dérèglement climatique. Ce specimen habite l'île de Don Det, Si Phan Don au Laos, dans une région sauvage loin de toute grande ville. |
Date | |
Source | Own work |
Author | Basile Morin |
Other versions |
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Camera location | 13° 59′ 08.53″ N, 105° 54′ 56.39″ E | View this and other nearby images on: OpenStreetMap | 13.985703; 105.915663 |
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Items portrayed in this file
depicts
13°59'8.531"N, 105°54'56.387"E
2 September 2019
0.8 second
10
100 millimetre
1,250
image/jpeg
c7e3404af4957117f83e4ff67691b30055181b0d
1,826,139 byte
2,165 pixel
3,248 pixel
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 14:17, 6 November 2019 | 3,248 × 2,165 (1.74 MB) | Basile Morin | User created page with UploadWizard |
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Metadata
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Camera manufacturer | Canon |
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Camera model | Canon EOS 5D Mark IV |
Author | Basile Morin |
Copyright holder |
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Exposure time | 4/5 sec (0.8) |
F-number | f/10 |
ISO speed rating | 1,250 |
Date and time of data generation | 02:29, 2 September 2019 |
Lens focal length | 100 mm |
Latitude | 13° 59′ 8.53″ N |
Longitude | 105° 54′ 56.39″ E |
Altitude | 63.8 meters above sea level |
Horizontal resolution | 238 dpi |
Vertical resolution | 238 dpi |
Software used | Adobe Photoshop Lightroom 6.12 (Windows) |
File change date and time | 16:15, 3 September 2019 |
Exposure Program | Manual |
Exif version | 2.3 |
Date and time of digitizing | 16:01, 3 September 2019 |
Shutter speed | 0.321928 |
APEX aperture | 6.643856 |
Exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Color space | sRGB |
Focal plane X resolution | 1,866.6666564941 |
Focal plane Y resolution | 1,866.6666564941 |
Focal plane resolution unit | 3 |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Auto white balance |
Scene capture type | Standard |
GPS time (atomic clock) | 19:25 |
Satellites used for measurement | 9 |
Receiver status | Measurement in progress |
Measurement mode | 3-dimensional measurement |
Measurement precision | Fair (1.4) |
Geodetic survey data used | WGS-84 |
GPS date | 1 September 2019 |
GPS tag version | 0.0.3.2 |
Serial number of camera | 088053003158 |
Lens used | EF100mm f/2.8L Macro IS USM |
Date metadata was last modified | 23:15, 3 September 2019 |
Unique ID of original document | D032C5272C7C823A2991571F397FD784 |
Copyright status | Copyrighted |
IIM version | 4 |