M-derived filter - définition. Qu'est-ce que M-derived filter
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Qu'est-ce (qui) est M-derived filter - définition


M-derived filter         
  • m-derived prototype shunt low-pass filter Z<sub>iTm</sub> image impedance for various values of ''m''. Values below cut-off frequency only shown for clarity.
  • m-Derived low-pass filter transfer function for a single half-section
  • m-derived series general filter half section
  • m-derived shunt low-pass filter half section.<br><math>C= \frac{L}{R_0^2}</math>
TYPE OF ELECTRONIC FILTER DESIGNED USING THE IMAGE METHOD
M-derived filters; M derived filters; M derived filter; M-type filter; M-Derived filter
m-derived filters or m-type filters are a type of electronic filter designed using the image method. They were invented by Otto Zobel in the early 1920s.
Mm'-type filter         
  • ''m'' {{=}} 0.6}}. A constant-k filter's image impedance is also shown (''Z''<sub>iT</sub>, in green).
  • C {{=}} L/R<sub>0</sub><sup>2</sup>}}
  • 4}}<math>\gamma = \alpha + i \beta\,</math>
  • '''Derivation of a mm'-type mid-shunt filter section'''. Starting from a prototype constant k filter T-filter, the circuit is transformed to a m-type mid-series derived filter, re-implemented as Π-section, transformed again to a mid-shunt derived mm'-type.
TYPE OF ELECTRONIC FILTER DESIGNED USING THE IMAGE METHOD
Double-m-derived filter
mm'-type filters, also called double-m-derived filters, are a type of electronic filter designed using the image method. They were patented by Otto Zobel in 1932.
Photographic filter         
  • The 80A filter, mainly used to correct for the excessive redness of [[tungsten]] lighting, can also be used to oversaturate scenes that already have blue. The photo on the left was shot with a polarizer, while the one on the right was shot with a polarizer and an 80A filter.
  • Effects of using a polarizer and a red filter in black-and-white photography
  • An extreme case: a Nikon D700 with a smashed filter which may have saved the Nikkor lens beneath. Usually, all that can reasonably be expected is protection from scratches, nicks and airborne contaminants.
  • Polarizing filter, Atlantic Ocean 1989
  • The ''LOMO effect'' imitates photos made with a low-cost Russian camera brand, named "LOMO". It is approximated by saturated central colors, blurred periphery, and darkened corners and edges ([[vignetting]]).}} effect.
CAMERA ACCESSORY CONSISTING OF AN OPTICAL FILTER
Daylight filter; Filter (photography); Lens filter; Filter ring; Filter mount; Filter thread; Cross screen filter; Photographic filters; Red Black and White filter; Camera filter; Series filter
In photography and cinematography, a filter is a camera accessory consisting of an optical filter that can be inserted into the optical path. The filter can be of a square or oblong shape and mounted in a holder accessory, or, more commonly, a glass or plastic disk in a metal or plastic ring frame, which can be screwed into the front of or clipped onto the camera lens.