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Grundlagen der Foto-Nachbearbeitung ,[object Object],[object Object]
Worum geht es? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Signalverarbeitung im Auge Licht  Zapfen Gehirn Farbton & Sättigung Helligkeit RGB HSL
Augen sind nicht präzise  (Metamerie)‏ ,[object Object],[object Object],[object Object]
Auswirkung in der Praxis in Bezug auf Wahrnehmung und Empfindung ,[object Object],[object Object],[object Object],[object Object]
Farbmodelle Beschreibung des Farbverhaltens von Ein- und Ausgabegeräten ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Durch Mischung der Primärfarben entstehen die Komplimentärfarben.
Primärfarben und Komplimentärfarben Die Basis der Bild-(Farb)-Bearbeitung Durch Mischung von Primärfarben entstehen Sekundärfarben Primärfarbe  Sekundärfarbe Die Komplimentärfarbe von: ROT = CYAN GRÜN = MAGENTA BLAU = GELB Kurzschreibweise: R  =  C G  =  M B  =  Y
Vergleich - Auge : Kamera ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Los gehts Die Klassiker unter den nicht “optimalen” Fotos:
UNTER- und ÜBERbelichtet
UNTER- und ÜBERbelichtet
UNTER- und ÜBERbelichtet
Weißabgleich: Zu Gelb oder Blau ?
Weißabgleich: Zu Gelb oder Blau ?
Weißabgleich: Zu Gelb oder Blau ?
Verschnitten? => Der Golde Schnitt
Der Golde Schnitt in der Fotografie Den Bildaufbau spannend gestalten.
Ein Beispiel in GROß
Ein Beispiel in GROß 2
Kontrastunterschiede
Kontrastunterschiede
Kontrastunterschiede
Was ist eigentlich der Unterschied zwischen Schärfe und Kontrast?
Ist das Bild scharf oder kontrastreich?
Schärfe und Kontrast
Schärfe und Kontrast
Schärfe und Kontrast
Tools mit denen man den Kontrast steigern kann ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],... wodurch das Bild auch schärfer wirkt.
Schärfe und Kontrast – mal gucken!
Schärfe im Fokus
Schärfe im Fokus
Schärfe im Fokus
Unschärfe- (Un-) Arten ,[object Object],[object Object],[object Object],Die schärfe wird für das Ausgangs- Medium und –Größe angepasst.
Verwackelungsunschärfe
Bewegungs- unschärfe
Tiefen(un)schärfe  (leider kaum mit Kompaktkameras)‏
Tiefenschärfe - Faktoren: ,[object Object],[object Object],[object Object],[object Object],[object Object]
Die Fotonachbearbeitungs-Schritte ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Bezeichnung – Photoshop : GIMP
Gimp: Werte ,[object Object],[object Object],[object Object],[object Object]
Gimp: Kurven - Kontrast anpassen !!! Kontrast steigern: S-Kurve  Kontrast Senken: umgekehrte S-Kurve
Gimp: Kurven -  (mittlere)  Helligkeit anpassen Aufhellen: Kurve nach oben  Abdunkeln: Kurve nach unten
Unterbelichtet ,[object Object],[object Object],[object Object],[object Object]
Überbelichtet ,[object Object],[object Object],[object Object],[object Object]
Ausschnitt wählen ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Bild ausrichten (Drehen)‏ ,[object Object],[object Object],[object Object]
Weißabgleich ,[object Object],[object Object],Bei einem Gelbstich: Den Gelb/Blau Regler richtung Blau schieben. =>Rot+Grün ergeben Gelb => daher beide Regler Richtung Cyan bzw. Magenta schieben. Bei einem Blaustich ist es genau umgekehrt.
Farbstiche entfernen  (Farben verstärken)‏ Annahme: das Bild ist zu  Rot . Unter: Farben – Farbton/Sättigung den Dialog aufrufen. Die zu reduzierende Farbe auswählen und den Regler für die Sättigung nach links schieben bis das Ergebnis gefällig ist. Mit erhöhen der Farbsättigung können selektiv Farben auch verstärkt werde. (Das Himmelsblau z.B.: !)‏
Gimp- Clone´s
Alernativen: PIXEL
 
Liste mit Bildbearbeitungs Apps. ,[object Object],[object Object]
10 Tipps für tolle Bilder ,[object Object]
Quellenangabe ,[object Object],[object Object],[object Object]
DANKE

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WebPlausch Fotogrundlagen und Fotonachbearbeitung in Gimp