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Bokeh weariness

Everyone is talking about bokeh, but nobody does anything about it ... Seriously: Is the enthusiasm for fast lenses that depict motifs offenblendig before an extremely blurred background, just a hype, whose time slowly passes by?

Okay, "bokeh" is the wrong term, even if it is often used in this context. He finally referred to the quality, the particular kind of blur outside the focus area, and not its quantity - ie the degree of blur. No one has anything against a pleasant, soft bokeh, but the background shall be so blurred really that you can not see anything more?

Bokeh-Überdruss
Tony Northrup explains why 4K video could not prevail against HD, but where everything in the world is he? The blurred background reveals nothing.

The video blog "Camera Conspiracies" recently with biting sarcasm the desire for more and more background blur criticizedAs for example, a YouTube video illustrated by Tony Northrup. Northrup explains the fact why hardly anyone - on YouTube - uses 4K video, and the vast majority of the content is to be uploaded before in a HD resolution. By contrast, leaves little to say, because that's the way - everyone is talking about 4K, but in practice you do not need it. virtually not existent - - background on but Northrups video that he recorded with a 50 mm f / 1.2 lens on a Canon EOS RP, especially the fuzzy falls. Camera Conspiracies irritated, because there acts a man in a indeterminate nowhere - the video could have been taken anywhere in the world.

In the world as we see it, there is no blur. Although our eyes have a limited depth of field, but we can anyway look really sharp only in a very small part of the visual field, our environment must therefore scanned point by point, and since the eye sharp, each detail that it considered, we see more and sharp images - if not, then we are fehlsichtig and need glasses or contact lenses to ensure a sharp image again. While the eye saccades to another point pivots or while it focused, the brain ignores the signals of the photoreceptor cells, and from the sharp images, it creates a model of the world.

An exemption is the subject of videos anyway hardly an issue, because only the subject movement range to differentiate it from the stationary background. But in photography, one may wonder whether the background should be mapped so blurred that you can not identify the context. A hundred years ago photographer used a as Erich Salomon highly fast lenses to - unnoticed - to work with the available light, but a shallow depth at that time was not as desirable. Today, the cameras achieve ISO values ​​that allow light photography Available also with moderate light levels yet, so extreme light intensities are more appreciated by bokeh fetishists. But really win our pictures if you do not even both eyes reflects sharply in a portrait photo, not to mention the very tip of the nose?

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Michael J. Hußmann

Michael J. Hussmann is a leading expert in the technology of cameras and lenses in Germany. He studied computer science and linguistics and worked for some years as a scientist in the field of artificial intelligence.

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  1. In der Welt, die wir sehen, ist es allerdings auch so, dass wir erstens dreidimensional sehen, und zweitens ununterbrochen in Bewegung sehen. Selbst wenn ein unbewegliches Objekt vor einem unbeweglichen Hintergrund angeschaut wird, bewegt sich zumindest der Kopf, meist der ganze Körper etwas.
    Ein Foto ist dagegen immer ein Abklatsch der Wirklichkeit, ein Moment festgehaltener Vergangenheit. Üblicherweise zweidimensional. Nicht, wie bei einem Hologramm, kann man um ein dargestelltes Objekt herum wandern, es auch seitlich betrachten.
    Gezielte Unschärfen sind ein Stilmittel, entsprungen aus den systembedingten Schwächen von optischen Systemen.
    Genau wie man wegen der Beschränkung auf schwarzweiß Filmmaterial versucht hat, die Stärken dieser beschränkten Technik herauszuarbeiten, nutzt man eben die optischen Beschränkungen der Schärfentiefe durch maximale Nutzung für vorteilhafte Bilder.
    Im obigen Beispiel ist wohl klar, dass es schnurzegal ist, wo dieser Mann die vermeintlichen Vorteile von HD gegenüber 4K erklärt. Also wird eben jeder Foto- und/oder Videograf entscheiden müssen, wann mehr Schärfentiefe für die momentane Aufnahme wichtig ist. Wie würden denn die vielen arbeitslosen Kameraassistenten ihre Brötchen verdienen, müssten sie keine Schärferegelung an den Objektiven der Filmkameras mehr vornehmen.:)
    Viele haben ein f1.2-Objektiv und manche wissen auch, wann sie es wie sinnvoll einsetzen. Jedenfalls sparsam.

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