File:Curled soot flakes deposited on glass pane of wood burner - DSG9046.jpg

DescriptionCurled soot flakes deposited on glass pane of wood burner - DSG9046.jpg	English: Curled and cracked flakes of soot adhering to the glass pane of a wood burner. These flakes were produced by a incidental hot flame causing a small section of a previously deposited smooth layer of soot to break up and wrinkle. The image was backlit by an LED panel. Deutsch: Gekrümmte und zerbrochene Rußflocken an der Glasscheibe eines Holzofens. Diese Flocken entstehen, wenn eine heiße Flamme auf eine zuvor abgelagerte glatte Rußschicht gerichtet wird, so dass diese zerbricht und sich aufkrümmt. Die Szene wurde von einer größeren LED-Flächenleuchte hinterleuchtet.
Date	29 September 2022, 09:05:44
Source	Own work
Author	Franz van Duns
Taken with InfoField	This photo was taken with Sony ILCE-7RM4
Taken with InfoField	This photo was taken with Sony FE 90mm F2.8 Macro G OSS

Camera location	51° 28′ 48″ N, 7° 33′ 00″ E	View this and other nearby images on: OpenStreetMap	51.480000; 7.550000

This picture won the 17 place in the Photo challenge Abstract photography in September 2022.

Quality image This image has been assessed using the Quality image guidelines and is considered a Quality image. العربية ∙ جازايرية ∙ беларуская ∙ беларуская (тарашкевіца) ∙ български ∙ বাংলা ∙ català ∙ čeština ∙ Cymraeg ∙ Deutsch ∙ Schweizer Hochdeutsch ∙ Zazaki ∙ Ελληνικά ∙ English ∙ Esperanto ∙ español ∙ eesti ∙ euskara ∙ فارسی ∙ suomi ∙ français ∙ galego ∙ עברית ∙ हिन्दी ∙ hrvatski ∙ magyar ∙ հայերեն ∙ Bahasa Indonesia ∙ italiano ∙ 日本語 ∙ Jawa ∙ ქართული ∙ 한국어 ∙ kurdî ∙ Lëtzebuergesch ∙ lietuvių ∙ македонски ∙ മലയാളം ∙ मराठी ∙ Bahasa Melayu ∙ Nederlands ∙ Norfuk / Pitkern ∙ polski ∙ português ∙ português do Brasil ∙ rumantsch ∙ română ∙ русский ∙ sicilianu ∙ slovenčina ∙ slovenščina ∙ shqip ∙ српски / srpski ∙ svenska ∙ தமிழ் ∙ తెలుగు ∙ ไทย ∙ Tagalog ∙ Türkçe ∙ toki pona ∙ українська ∙ vèneto ∙ Tiếng Việt ∙ 中文 ∙ 中文（简体） ∙ 中文（繁體） ∙ +/−

en: Curled and cracked flakes of soot adhering to the glass pane of a wood burner.

• These flakes were produced by a spontaneous hot flame emanating from one end of a chunk of log faced towards the front pane. This caused a small section of a previously deposited smooth layer of soot to break up and wrinkle.
• The curved nature of the depicted soot flakes reminds one remotely of certain Chinese artwork, especially clouds and/or frothing waves. At lower left one can surmise the outlines of two flowers, reminescent of roses.
• In addition to the main soot-black shading various hues of nearly white to intense yellow are highly conspicuous in the areas where the soot layer has been peeled back. When viewed at full resolution small specks of brownish and even slightly red hues appear, mostly around specks of soot. I take an educated guess that all these colours are caused by secondary layers of hot vapours or soot, deposited on the glas pane after the cracks had opened, now extremely thin and thus translucent.
• By the way, the glass pane took no harm. As recommended by the manufacturer, some rubbing with wettened wood ash and applying a little elbow-grease removed all this grime completely.
• The magnification ratio of this crop as compared to a full frame sensor is approx. 1:2.5, i.e. 0.4x.
  The image frame thus depicts an area of approx. 60mm x 60 mm. The multi-petaled "rose bloom" at lower left was in reality just 5.5 mm wide and barely visible.
• Image series taken in Aplerbeck, Dortmund, Germany in September 2022.

• Single image.
• [1] Camera: ILCE-7RM4: Sony Alpha 7RIV, 61 Mpixels, sensor size 9504x6336
• [2] Lens: Sony FE 90mm F2.8 Macro G OSS.
• [3] Setup/illumination: Scene backlit by an well-diffused LED panel at reduced intensity.
  Bias (=exposure compensation) set to -3.0 to reduce the glare from behind and thus preserve the black edges of the cracked soot layers.
• [4] Scope: 1 image out of a series of 5. Initial magnification factor based on full sensor size before crop: 1:1:4.5 (0.22x). Final dimensions / magnification: see section [10].
• [5] Camera / lens settings: aperture mode, electronic shutter, ISO 100, 1/125s, aperture 10.0, bias (=exposure compensation) -3.0, WB (white balance) 5600K, BrightnessValue 6.06, colour space 'Adobe RGB'.
• [6] ---
• [7] Adobe Lightroom: imported 'Adobe RGB' RAW (.ARW) file (a) Applied standard preset 004 (WB, tint:unaltered, Exposure+0.91, Presence: Texture+30 Clarity+30 Vibrance+5 Saturation+3, Sharp: Amount+70, Radius:1.0 Detail:25 Masking:20, NoiseRed: Lum:50 Detail:50 Contrast:0 Color:30 Detail:50, Smooth:50, LensCorr:all) (b) Subsequent changes (final values stated): Exposure:UNALTERED Texture+50 Vibrance+10 (c) tone curve:UNALTERED (d) exported as TIFF/16bit, 'ProPhoto-RGB' colour profile.
• [8] ---
• [9] Adobe Photoshop: (a) imported TIFF/16bit image, explicitly preserving embedded colour space 'ProPhoto-RGB' (b) removed sensor specks and visible specks of dust and strands (c) mask:NO (d) tone curve:NO (e) enhanced sharpness:NO (f) rotated:NO (g) cropped:5100x5100 (h) saved as PSD file (i) exported as JPG max. quality file (previously: 12 of 12) with embedded 'sRGB' colour profile.
• [10] Final dimensions: width of final image: approx. 60 mm, i.e. magnification factor based on full frame approx. 0.4x.
• [11] ExifTool: added user-related tags and reimported technical tags that hat been discarded during Photoshop EXPORT-AS-JPG processing from both original .ARW and intermediate .TIF files.
• [12] Wiki Commons categorisation: 'Category:Soot' and 'Category:Close-up photographs of textures'.

Wikipedia en: Soot, Texture_(visual_arts)#Physical_texture

Wikipedia de: Ruß

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