Bildkreis


Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102

Strict Standards: Non-static method MagicWord::get() should not be called statically, assuming $this from incompatible context in /var/www/clients/client4/web9/web/includes/Parser.php on line 2102
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Der Bildkreis ist der Bereich, den ein Objektiv ohne allzu deutliche Randabschattung oder Vignettierung abbilden kann. Der Durchmesser des Bildkreises muss daher mindestens der Diagonale des Aufnahmemediums/Sensors entsprechen.

\varnothing_{Bildkreis} = \sqrt{B^2+H^2}

Der Bildkreis von Kleinbildkamera-Objektiven hat einen Durchmesser von mindestens 44 mm im Gegensatz zu den FourThirds Objektiven mit mindestens 22 mm. Der Bildkreis von Kleinbild ist also doppelt so groß wie der von FT. Dies erklärt auch, warum die Optiken von FourThirds kleiner und leichter gebaut werden können, als die Pendants von Kleinbild. Aus diesem Zusammenhang resultiert auch der Cropfaktor.

Bei kreisförmig abbildenden Objektiven - wie z. B. beim Zuiko Auto-Fisheye 1:2,8/8 mm - kann der Bildkreis kleiner als die Diagonale des Aufnahmemediums/Sensors sein - s. unten.

Der Bildkreis hat nichts mit dem Bildwinkel, der Brennweite oder der Anfangsöffnung des Objektivs (der Lichtstärke oder größten Blende) zu tun, sondern ist konstruktiv bedingt.

Normalerweise wird der Bildkreis beim Abblenden größer - das erklärt, warum bei vielen Objektiven die Vignettierung bei kleiner Blende geringer wird.

Hierzu die Bildkreise einiger OM-Objektive bei Unendlichkeitseinstellung:

Objektiv größte Blende kleinste Blende
Zuiko Auto-S 1:1,8/50 mm 48 mm 50 mm
Zuiko Auto-W 1:3,5/21 mm 46 mm 46 mm
Zuiko Auto-W 1:2,8/35 mm 56 mm 58 mm
Zuiko Auto-T 1:2,8/100 mm 54 mm 60 mm
Zuiko Auto-T 1:3,5/135 mm 52 mm 54 mm
Zuiko Auto-Makro 1:3,5/50 mm 46 mm 50 mm
Zuiko Auto-Fisheye 1:2,8/8 mm 23 mm 23 mm
Zuiko Auto-Fisheye 1.3,5/16 mm 44 mm 44 mm

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