
das Bild
picture
A visual representation of something or someone, for example a photograph, painting, or drawing.
An der Wand hängt ein schönes Bild von der Küste.
There is a beautiful picture of the coast hanging on the wall.
picture / image
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picture
A visual representation of something or someone, for example a photograph, painting, or drawing.
An der Wand hängt ein schönes Bild von der Küste.
There is a beautiful picture of the coast hanging on the wall.

mental picture
A mental image or impression that one has of something or someone.
Ich habe ein klares Bild davon, wie mein zukünftiges Haus aussehen soll.
I have a clear picture of what I want my future house to look like.

picture
The display on a screen, for example on a television, monitor, or mobile phone.
Bei dem alten Fernseher ist das Bild oft unscharf.
On the old television, the picture is often blurry.

to get a picture of
To get an impression of a person, thing, or situation.
Besuchen Sie den Tag der offenen Tür, um sich ein Bild von unserer Schule zu machen.
Visit the open day to get a picture of our school.

image
The public impression or reputation (image) that a person or organization has in public.
Durch den Skandal hat das Bild des Politikers in der Öffentlichkeit stark gelitten.
Because of the scandal, the politician's image in the public eye has suffered greatly.

scene
A sight or scene that one observes.
Die spielenden Kinder im Park boten ein idyllisches Bild.
The children playing in the park presented an idyllic scene.

to be in the picture
To be informed about a matter or up to date.
Keine Sorge, mein Kollege hat mich informiert, ich bin im Bilde.
Don't worry, my colleague informed me; I'm in the picture.

image / metaphor
A metaphor or linguistic comparison used to make something vivid.
Der Dichter verwendet das Bild des Herbstes, um Vergänglichkeit auszudrücken.
The poet uses the image of autumn to express transience.
The word 'Bild' (picture/image) is part of many compound nouns. The prefix often describes the type or content of the image.
Ein Landschaftsbild zeigt eine Landschaft.
A landscape painting shows a landscape.
The expression 'sich ein Bild von etwas machen' (to get a picture of something) is reflexive and requires the dative. It means to form a personal impression.
Ich möchte mir vor Ort ein Bild von der Lage machen.
I would like to get a picture of the situation on site.
The idiom 'im Bilde sein' means 'to be informed'. You can also 'jemanden ins Bild setzen', which means 'to inform someone'.
Danke für die E-Mail, jetzt bin ich im Bilde.
Thanks for the email; now I'm in the picture.
When 'Bild' (picture/image) describes an idea in your head, it is often combined with words like 'im Kopf' (in one's head), 'innerlich' (internally), or 'eine Vorstellung' (an idea/conception).
Ich habe noch ein ganz genaues Bild von unserem ersten Treffen im Kopf.
I still have a very precise picture of our first meeting in my head.
In the meaning 'Image' (image), 'Bild' (image) is often used in the context of media and the public. It describes the reputation of a person or company.
Die Firma versucht, ihr negatives Bild in der Öffentlichkeit zu korrigieren.
The company is trying to correct its negative image in the public eye.
When 'Bild' (scene/sight) describes a scene or sight, it is often used with the verbs 'bieten' (to present/offer) or 'abgeben' (to make/present).
Die Fans im Stadion gaben ein farbenfrohes Bild ab.
The fans in the stadium made a colorful scene.
In literary or linguistic analysis, 'Bild' (image) refers to a metaphor or linguistic symbol. This is not about a visual representation.
In dem Gedicht steht das Bild des Weges für das Leben.
In the poem, the image of the path stands for life.
In a technical context, e.g. with televisions or cameras, 'das Bild' (the picture) refers to the quality of the display. Typical adjectives are 'scharf' (sharp), 'unscharf' (blurry), or 'hell' (bright).
Stell bitte das Bild am Monitor etwas heller ein.
Please set the picture on the monitor a little brighter.
photo
Bild is the general term for a visual representation and can refer, for example, to a drawing, painting, or photograph. Foto more specifically refers to an image produced with a camera. If the photographic origin is important, Foto is the better choice; otherwise, Bild is broader.

Über dem Schreibtisch hängt ein gemaltes Bild vom alten Hafen.
A painted picture of the old harbor is hanging above the desk.
Über dem Schreibtisch hängt ein mit der Kamera aufgenommenes Foto vom alten Hafen.
A photo of the old harbor taken with a camera is hanging above the desk.