Basic Techniques in Photography : Depth of Field
Hello Everybody!
After reading the article about Tips How To Become a Photographer you'll want to know what it DoF? In this time I will discuss about the DoF. What it DoF?DoF or abbreviation of Depth of Field has a sense of spatial depth. In photography, Depth of Field (DoF) is the area in the field of photo that has a higher sharpness than other parts.DoF is usually identified with the Point of Interest (POI), which became the main focus areas of a photograph or in other words, the area you want highlighted and become a 'major star' in a photograph. In fact, it is often confused with an understanding of the DoF Bokeh, though influenced by the DoF Bokeh (one of them) but the DoF is not Bokeh.
Anything that affects the value of DoF? In a field picture, the area is influenced by the value Arperture (not Diaphragm lens) and long-Focal Lens.
Here's the explanation
- The smaller the F value, the greater the diaphragm aperture lens, and vice versa. In other words, the smaller the value of F Stop the area that became Depth of Field or area that has become increasingly narrow sharpness. For example when you want to photograph Landscape (scenery), if we want the resulting image has a strong acumen in all areas of an image area, then we can use the value of F / 16 or more (figure F Stop big). Different when shooting macro pictures with a small object, to narrow DoF it is used F Stop with a small number (F / 5.6 s / d F / 9). To make it easier to understand, look back at the photo above.
- The shorter the Lens Focal her then widening the area of its depth of field. In other words, the shorter the Focal Lens used on the lens, the greater the area that has the sharpness. For example when you want to photograph Landscape (scenery), if we want the resulting image has a strong acumen in all areas of an image area, then we can use the shortest Focal Lens (18mm lens kit) or using a Wide Angle lens.
- Each lens has a 'Sweet Spot' respectively, ie the value of F in which the lens can generate the sharpest image. Usually between F / 8 s / d F / 10. This can be tested by photographing an object, the shutter speed, ISO and the same angle but its F value is different then consider the changes depth of field of each photo.
- Keep in mind that the use of such a large F value F / 22 or more may risk creating defraksi so that the resulting picture becomes less sharp.
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