The noise level depends on the total light collected, so larger sensors will have less noise for a given exposure.ĭon't know if I quite understood it. When you finally do open the shutter, the larger sensor, with its greater area, will collect more light than the smaller sensor even though the F-number and shutter speed may be the same. And like the water hose example above, you don't have an actual quantity of light until you open the shutter and collect some light. Luminance is luminous intensity per area.kinda like pressure.and no matter how large or small a sensor or lens is, the luminance is the same for a given F-number. You don't have an actual amount of water until you open the hose. Not the same quantity, but the same luminance, which is sorta like the water pressure in a hose (but not really.) The water in a hose will have a certain force per unit of area, such as pounds per square inch. Regardless of the focal length in use (zoom) both senors will be exposed to same quantity of light (luminance ? ). If you compare four-third and 1/1.7 sort of a sensor with same megapixels (say 10Mpixels) and same sensor technology etc.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |