stop up teriminin İngilizce İngilizce sözlükte anlamı
To increase the aperture of a photographic lens, moving from an f/stop represented by a higher number to an f/stop represented by a lower number and causing more light to pass into the camera
To stop down means to narrow the aperture; to stop up or open up means to expand it.
[ 'stäp ] (verb.) 13th century. Middle English stoppen, from Old English -stoppian, from Vulgar Latin stuppare to stop with tow, from Latin stuppa tow, from Greek styppE.