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Centaurea calcitrapa


Centaurea calcitrapa
Information sur la photo
Copyright: philippe hornus (amanengone) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 187 W: 54 N: 412] (2113)
Genre: Plants
Média: Couleur
Date de prise de vue: 2015-08-12
Catégories: Flowers
Appareil photographique: Olympus OM D EM1, Zuiko 40-150 3,5-4,5
Exposition: f/13.0, 1/500 secondes
More Photo Info: [view]
Map: [view]
Versions: version originale
Date de soumission: 2016-12-14 17:46
Vue: 944
Points: 4
[Ligne directrice - Note] Note du photographe
The topic

Centaurea calcitrapa ((Linnaeus, 1753)

This floral species os often known as red star-thistle or purple starthistle. It is a very common plant in Europe.

Phyllogenetic classification (According Tolweb and Classification phylogénétique du vivant – in Lecointre & Le Guyader – 2016 edition)

Biota / Eukaryotes / Archaeplastida (Plantae) / Plasmodesmophytes / Green plants / Metabiontes / Chlorobiontes / Streptophyta / Phragmoplastophytes / Plasmodemophytes / Parenchymophytes / Embryophytes / Stomatophytes / Hemitracheophytes / Polysporangiophytes / Euphyllophytes / Spermatopsida /Angiosperms / …………/ ………… / ………. / Eudicots / …………… / …………… / Core Eudicots / …………… / Asterids / Euasterids / Campanulids / ………….. / Asterales / Asteraceae / Carduoideae / Cardueae / Carduinae / Centaurinae / …………/ ………… / ………. / Centaurea / Centaurea calcitrapa

A few information on the plant

Characters of this plant:

• Biannual or annual plant, thorny, size around one meter plus
• Grooved and hairless stem is upright ; it is extremely ramified
• Cauline leaves are pinnatisected ; ramifications quite linear
• Strong root system allowing the plant to survive from one year to another and to accept very dry condition all along his life
• Spiny involucre with basal spinlets
• White to purple capitulate of flowers
• Florets linked in capitulum, actinomorphic with five petals
• Calyx from the peripheral florets more or less asymmetric with five petals, the external one greater
• Extremely profuse plant, without any IUCN status.

Readings

• Links

o Carl von Linnaeus - Species Plantarum - The starting point for the naming of plants
o French Wikipedia for Centaurea calcitrapa
o English Wikipedia for Centaurea calcitrapa
o Deutsh Wikipedia for Centaurea calcitrapa
o French database on botanic (strongly comprehensive) - Centaurea calcitrapa
o Database from the French National Museum of Paris - for Centaurea calcitrapa
o Database “Tropicos” from the Missouri Botanical Garden
o Between sea, stream and earth, the « Domaine de la Palissade » - A conservatory area of interest

• Further readings

o Flore complète portative de la France, de la Suisse et de la Belgique by Gaston Bonnier and Georges de Layens – Scanned document of the « Real Jardin Botànico » in Madrid
o Grande flore en couleur by Gaston Bonnier and Georges de Layens – Scanned document of the « Real Jardin Botànico » in Madrid
o o Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes by Hippolyte-Jacques Coste (Abbé) – Scanned document of the « Real Jardin Botànico » in Madrid
o Flore des champs cultivés – Philippe Jauzein – Quae édition
o Botanique systématique et appliquée des plantes à fleurs – Michel Botineau – Lavoisier éditions
o Précis de Sciences Biologiques – Botanique – P.P.Grassé et autres
o Classification phylogénétique du vivant – G.Lecointre et H.Le Guyader – Tomes 1 et 2 – Belin éditeur

Shooting

• Date of shooting 12/08/2015 13:49:50
• Place of shooting Réserve de biodiversité – Domaine de la Palissade - France
• Latitude 43.37587 N
• Longitude 04.81053 E

• Camera

o Camera OLYMPUS DIGITAL CAMERA Model E-M1
o Objectif ZUIKO MinFocalLength 40 MaxFocalLength 150 Aperture 1: 2,8 - 3,5

• Picture Specification’s

o ImageWidth 4640
o ImageLength 3472
o BitsPerSample 16
o Compression Uncompressed
o Orientation Horizontal

• Shooting condition’s

o Light source Auto
o Metering mode Multi segment
o Picture mode Vivid
o Exposure mode Aperture priority
o Focus mode Manual
o Focus process AF used
o Aperture f/13
o ExposureTime 1/500
o ISO Speed Rating 500
o FocalLength 150
o White Balance Temp Auto
o Noise Reduction 0
o Shading Compensation off
o Contrast normal
o Saturation normal
o Sharpness normal
o Mode image Natural

Raw treatement

• Formation au post-traitement numérique - A voir

• Developpment of the raw file Olympus (*.orf) with DxO OpticsPro 11

• Colour

o White Balance Temperature 4903 K – Teinte 0
o Colour’s Accentuation vibrance 0 saturation 0
o Colour’s rebdering Referenced camera - Intensity 100 – Saturated colours protection – 20
o TSL none

• Light

o Compensation exposition none
o DxO smart lighting light – Intensity 25
o Tonalité sélective none
o DxO clear view none
o Contraste none
o Courbe des tons none
o Vignetage Auto, basé sur module optique décelé – Intensité 100 – Préservation 50

• Details

o Noise reduction prime luminance 40 – chrominance 100 – Basse fréquence 75 – Pixel
Morts 24
o Netteté de l’optique Globale 0.00 – Détails 50 – Bokeh 50
o Aberration chromatique Auto – Latérales – Intensité 100 – Taille 6 – Franges violettes OK
o Masque de netteté Intensité 100 – Rayon 0.50 – Seuil 4 – Bords 0

• Recadrage

o Horizon 0.00°
o Recadrage Manuel, sans contrainte – Rapport tailles 4/3
o Recroping area of 4608 x 3456 px off 4608 x 3456 px

Post treatment

• Tif file edition corel paintshop pro
• Re cropping area of 1575 x 1575 px off 4608 x 3456 px
• Sharpness improvement
• Improvement of the contrast
• Re sizing compatible with Treknature (max 800x800 – maximum size 300K)
• Publication jpg – compression mode : normal - intensity 10 – mode YCbCr 1x1 1x1 1x1


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Critiques [Translate]

  • Great 
  • tuslaw Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2695 W: 278 N: 4888] (19769)
  • [2016-12-15 18:09]

Hello Philippe,
What a neat close-up of this beautiful bloom. Sharply focused giving us a great look at its intricate features. I love the bright cheerful colors and the overall composition. Plenty of DOF and just the right amount of exposure.
Ron

  • Great 
  • lousat Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 5826 W: 89 N: 14934] (62655)
  • [2016-12-16 14:12]

Salut Philippe,absolument magnifique cette prise de vue qui regarde dans le coeur du fleurs,details et couleurs de haut niveay,super! Bon WE et merci,Luciano

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