File:Close-up view of a beetle Elateroidea.jpg
Jump to navigation
Jump to search
Size of this preview: 800 × 533 pixels. Other resolutions: 320 × 213 pixels | 640 × 427 pixels | 1,024 × 683 pixels | 1,280 × 853 pixels | 2,560 × 1,706 pixels | 3,248 × 2,165 pixels.
Original file (3,248 × 2,165 pixels, file size: 1.74 MB, MIME type: image/jpeg)
Captions
Captions
Close-up view of a beetle Elateroidea
Summary[edit]
| Description |
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 |
|
| Camera location |  | View this and other nearby images on: OpenStreetMap |  |
|---|
Licensing[edit]
I, the copyright holder of this work, hereby publish it under the following license:
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/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 14:17, 6 November 2019 | | 3,248 × 2,165 (1.74 MB) | Basile Morin (talk | contribs) | User created page with UploadWizard |
You cannot overwrite this file.
File usage on Commons
The following 5 pages use this file:
