Photo and Pictures

ISO is a standard and have specific forms for light sensitivity of color film. ISO is a linear scale, which replaced the earlier ASA (American Standards Association) which was of similar quality as determined by the U.S. organization.

What is it that they set the standard for then? It is about sensitivity to light and how “fast” the photographic film is for the changing of the light. It then determines how much light is needed for the film to reproduce an image. The photographic film was fine or coarse grains.

A film with the value ISO 200 is twice as sensitive as a film with ISO 100. In a digital camera, it means that when you increase your camera’s ISO value, do CCD / CMOS element (it corresponds to the film) sensitive to receive the light.

Different cameras are various good at this also when you increase the ISO value, you also have more noise. This is often a little less compact cameras CCD / CMOS elements and gives more noise than the digital SLRs. A good compact digital camera today, 2006 may go up to ISO 800 and still give a good picture. A digital SLR at ISO 1600 can provide a fine image with very little noise. This will be better all the time as technology advances.

This entry was posted by Bengt on Friday, November 6th, 2009 at 1:10 pm. It is filed under Miscellaneous and has these tags: light, photo, sensitivity. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.