communication
Pixels and subpixels
Once I wondered: ‘Why do my Nikon D700 RAW files weigh so little?’. In search of an answer, I found very interesting information.
So, when shooting, I sometimes use the RAW file format, (in Nikon it is called NEF – Nikon Electronic Format – Nikon electronic file format). Nikon’s RAW files have certain settings, I usually use 14-bit color depth with no loss or no compression at all. In general, NEF files with 14-bit color depth and without compression weigh about 24.4MB. In the image below, I showed the size of my files in bytes. Continue reading
Depth of Field Preview
Some cameras have a function to preview the depth of field. To understand how it works, you first need to know what the depth of field is, for example, you can read about it here.
Modern cameras always perform focusing at the maximum aperture. For example, if a standard 18-55mm F / 3.5-5.6 lens is used, then focusing will always be done on apertures from F / 3.5 to F / 5.6 (depending on the focal length). Continue reading
Bar chart
A histogram is a chart based on the tonal distribution of pixels in a picture.
From the left to the right (horizontally) the brightness is indicated, and from the bottom up (vertically) the amount of the photo area of a particular tonality. It is often said that vertical columns simply show the ratios of the number of pixels of a particular pitch. That is, the diagram shows how much light or dark shades prevail in the picture, how many green or red or other shades of colors in the picture are larger. Histograms are different. In photography, basically, three types are used: Continue reading
