<< Previous Next >>

Sunflower


Sunflower
Photo Information
Copyright: Siegfried Potrykus (neusser0204) Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 490 W: 48 N: 1830] (7212)
Genre: Places
Medium: Color
Date Taken: 2009-09
Categories: Nature
Photo Version: Original Version
Date Submitted: 2009-10-06 1:48
Viewed: 114
Points: 32
[Note Guidelines] Photographer's Note
For other uses, see Sunflower (disambiguation).
Sunflowers (Helianthus annuus) are annual plants native to the Americas, that possess a large inflorescence (flowering head).
Head displaying florets in spirals of 34 and 55 around the outsideWhat is usually called the flower is actually a head (formally composite flower) of numerous florets (small flowers) crowded together. The outer florets are the sterile ray florets and can be yellow, maroon, orange, or other colors. The florets inside the circular head are called disc florets, which mature into what are traditionally called "sunflower seeds," but are actually the fruit (an achene) of the plant. The inedible husk is the wall of the fruit and the true seed lies within the kernel.
The florets within the sunflower's cluster are arranged in a spiral pattern. Typically each floret is oriented toward the next by approximately the golden angle, 137.5°, producing a pattern of interconnecting spirals where the number of left spirals and the number of right spirals are successive Fibonacci numbers. Typically, there are 34 spirals in one direction and 55 in the other; on a very large sunflower there could be 89 in one direction and 144 in the other.[1][2][3] This pattern produces the most efficient packing of seeds within the flower head.
Sunflowers in the bud stage exhibit heliotropism. At sunrise, the faces of most sunflowers are turned towards the east. Over the course of the day, they follow the sun from east to west, while at night they return to an eastward orientation. This motion is performed by motor cells in the pulvinus, a flexible segment of the stem just below the bud. As the bud stage ends, the stem stiffens and the blooming stage is reached.

Sunflowers in their blooming stage lose their heliotropic capacity. The stem becomes "frozen", typically in an eastward orientation.[citation needed] The stem and leaves lose their green color.

The wild sunflower typically does not turn toward the sun; its flowering heads may face many directions when mature. However, the leaves typically exhibit some heliotropism.
(Wikipedia)
fransx, daisydaisy, horias, Saba, taftabit, Emma, jan515, mikolaj_cava, boreocypriensis has marked this note useful
Only registered TrekLens members may rate photo notes.
Add Critique [Critiquing Guidelines] 
Only registered TrekLens members may write critiques.
Discussions
None
You must be logged in to start a discussion.

Critiques [Translate]

Hi Siegfried,
Fantastic light on this particular sunflower, chosen by you from amongst those hundreds blurred at the BG.
Fabulous details and a great use of shallow DOF!
Very pleasing composition, eye-catching!
Well done,
Best regards,

Francis Xavier

Hallo Siegfried,

Great macro capture of the lovely sunflower with wonderful details!
The POV and sharpness are perfect with superb colors!
The BG with golden colored sunflowers, is simply OOF!
Well done.

best regards,
Paras

hello Siegfried
how are you are doing well
very sharp and bright croped sunflower
nice exposure and rich yellow colour
good dof
tfs

regards
Manuj Mehta

Powerful result !
I love all this yellow ambiance.
Very positive photo. Strong light and color.
Excellent focus and nicely framed too.

best regards

Hi Siggi!
interesting photo...very creative crop and i like the tilt of the horizon behind, creating a nice background...the colors are magnificent, very pleasant to the eye, the sharpness is also great...fantastic light...
great work, tfs
regards,
Alper

Siggi
Wonderful sunflower capture!
Colors are amazing, details are great.
Horia

  • Great 
  • Saba Gold Star Critiquer/Gold Note Writer [C: 589 W: 0 N: 1605] (9205)
  • [2009-10-06 11:30]

Witaj Sigi! :)

I od razu cieplej mi jak patrze tego tego slicznego slonecznika.
Fantastyczne kolory i swiatelko, wspaniale wykonanie, cudowny efekt.

Gratulacje i moc pozdrowien.
Barbara

hey Siggi
lovely composition my friend , real artwork
congratulations
T

Great focus details and composition .
Beautiful photos.
Regards Zoran

  • Great 
  • Emma Gold Star Critiquer/Gold Note Writer [C: 1403 W: 6 N: 1920] (10151)
  • [2009-10-06 14:42]

Fantastyczny kolor tego slonecznika Siegfriedzie,
Barzo podoba mi sie fokus i to zblurowane pole tych slonecznikow.
piekna praca.
Pozdrawiam.
Eva

  • Great 
  • jan515 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2498 W: 56 N: 3862] (17484)
  • [2009-10-06 14:53]

Witaj Siegfried,
Fantastyczne swiatelko i kolorki oraz kontrast tego pieknego slonecznika.Ladna i przyjemna dla oka kompoycja.
Serdecznosci.
Janusz

Czesc Siegfried! Dobre ciecie od doly, dobra ostrosc, bardzo ladne tlo, znakomita kolorystyka. Klaniam sie!

Hi again MF Siggi,

Aestheticaly perfect capture of this half sunflower from frontal POV with great DOF and delightful composition.
TFS and have a nice night MF,
Cheers,

Bayram

Ciao Siggi, fantastic light on a wonderful sunflower, splendid sharpness and great colors, very well done, ciao Silvio

  • Great 
  • ayse51 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1709 W: 124 N: 1465] (20644)
  • [2009-10-08 10:23]

Hi siegfried,
beautiful sun flower.Amazing yellow and light.Many many thanks for this beauty.TFS.necla.

  • Great 
  • foozi Gold Star Critiquer/Gold Note Writer [C: 595 W: 0 N: 957] (4612)
  • [2009-10-13 0:33]

Hi Siegfried,
excellent sharpness with nicely thought composition.
The yellow is so brilliant and you cut out the background glare is pleasant indeed.
I like this stylish way of showing the details.

regards,
Foozi

Calibration Check
















0123456789ABCDEF