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Neutral Density

Reducing the intensity of all wavelengths of light equally

Neutral Density (ND) filters reduce the intensity of light entering the lens and modify all wavelengths equally so there should be no change in rendition of color. They therefore allow larger apertures and or longer shutter speeds to be used when they would otherwise result in over exposure, allowing more creative control over depth of field and recording motion in moving subjects. They are available at various strengths:

ND 2 (0.3) absorbs 1 stop of light
ND 4 (0.6) absorbs 2 stops of light
ND 8 (0.9) absorbs 3 stops of light
ND 16 (1.2) absorbs 4 stops of light

Example use: With the maximum shutter speed of 1/500 it’s impossible to achieve a shallow depth of field in a scene lit by daylight. Using ISO 200 film the biggest aperture you could use would be f/11 at 1/500. If you were to add an ND2 you could shoot at f/8, ND4 f/5.6, and an ND8 filter you could open up to f/4. Likewise, instead of increasing aperture you could increase the shutter speed if you wanted to blur subjects in motion.

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About Ilott Vintage

A valuable reference for anyone wanting to learn more about rangefinder cameras, manual film photography, or both, this website is intended to serve not only as a resource to discover some amazing objects but also as a place to learn more about them, to understand exactly what they are capable of, and why. Read More

See Also
  • Minolta Repo-S
  • Minolta V2 The world's first 1/2000 leaf shutter camera
  • Minolta AL
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    Wednesday 8th February 2023