Chapter in this post:
When taking pictures with the camera or smartphone, the background should sometimes be sharp and sometimes blurred. But what is the technical term for the sharpness in the depth of the image - depth of field or depth of field? Every time I write an article that includes this word, I have to look to see whether it means depth of field or focus on the field or focus on goat or whatever. The first is of course correct. The actually incorrect term "depth of field" has also established itself in everyday language. There is no difference in terms of content.
However, if you want to be correct in terms of the spelling, you can simply remember that the order in the alphabet must be adhered to: SSHARPENINGTIEFE. So first S and then T. With that I can memorize it well.
The meaning of the individual words should be clear: “Sharpness” stands for the clear depiction of an object or motif, and “Depth” refers to the spatial expansion of the photograph - the Z-axis in the photo, so to speak. The depth of field describes whether and how sharp or unsharp certain depths are. This should be known from macro, portrait, tilt-shift effect and bokeh photography, because they play with blurring.
With regard to the sharpness of the background, the following applies:
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A high depth of field - or colloquially, depth of field - is used, for example, for a landscape, panorama or other photograph in which the entire image content is important. A blurring in the image depth is used as a stylistic device when an object is to be highlighted in the foreground and / or the image background would be too distracting in full sharpness.
It is important to know that with digital cameras, including DSLR cameras, the sensor size has an effect on the game with sharpness in depth. The larger the image sensor in the camera, the more leeway there is. No less important, however, are the proximity or distance to the photographed object as well as the aperture settings (exposure partly affects the sharpness) and the choice of focal length. The following comments:
If you want to know exactly, then have a look at Wikipedia article on the subject past. There the depth of field is explained very precisely and wonderfully inscrutable for laypeople. So if you have fun with the geometry, the physics and the complex formulas behind the depth of field (not depth of field), you can really live it out and see many numbers and tables to internalize. Fortunately, there are also pictures and animations as examples for different techniques and sharpness values;)
Jens has been running the blog since 2012. He appears as Sir Apfelot for his readers and helps them with problems of a technical nature. In his free time he drives electric unicycles, takes photos (preferably with his iPhone, of course), climbs around in the Hessian mountains or hikes with the family. His articles deal with Apple products, news from the world of drones or solutions for current bugs.