Sunset in Kruger

by MrFrench

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The simple answer is you can get shallow depth of field (hence bokeh) with any camera system if you focus close enough. Finite depth of field arises due to the inability to focus light coming in at different angles in the same plane. When light is focused at the wrong distance is appears as a spot the shape of the aperture, instead of a point. Large ...


If a camera is focused at infinity, then the size of the blur circle for an object at a given distance is the same as the size of the lens aperture. So if the iPhone camera has a 1 mm diameter lens aperture, and if focus is set to infinity, then every object is blurry at the 1 mm level: which is not detectable on a tree a hundred meters away, but is ...


You mentioned four factors from your reading (lens diameter, lens size, distance ratios, and print size), but the only ones that really matter are the first two - or, more specifically, the lens iris (the diameter of the opening that lets the light in, not the physical lens diameter) and the lens focal length (the distance from the center of the lens to the ...


Many older or cheaper phone cameras use a "fixed focus" lens. ie it is always set to focus a specific distance away from the camera. This is usually set to the "hyperfocal distance", ie everything from half that distance out to infinity is in focus. This depends on just what is acceptable as 'in focus'. But most photos from these cameras will be sharp ...

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