ON EACH CAMERA TOP, particularly in prosumers and dslrs there is a dial, which operates P,S,A,M modes while shooting a picture by selecting an individual mode. Let us see below what are their functions:
P-(Programmed auto): in this mode the camera automatically adjusts shutter speed and aperture for optimal exposure in most conditions. This mode is recommended for snapshots and other situations in which u want to leave the camera in charge of shutter speed and aperture.
S-(shutter-speed priority): Here you choose the shutter speed from varied speeds provided in the camera--may range from 30s-1/8000 of a second. While the camera automatically selects the aperture producing optimal exposure. Use slow shutter speed to suggest motion by blurring moving subjects---high shutter speed to freeze the motion.
A-(Aperture priority auto): In this mode, you choose the aperture as provided in the camera e.g. f2.8 to f22 (this may differ in other cameras models-prosumer or dslr), while the camera automatically selects the shutter speed which will produce the optimal exposure. Small Apertures (bigger f numbers) increase depth of field bringing both the main subject and background in focus. Larger apertures (small f numbers) soften background details and produce less depth of field.
M-(Manual mode): By using Manual mode you control both shutter speed and aperture. Here u can choose any speed between e.g. 30s and 1/8000 of a second and select the aperture from maximum opening to the minimum aperture, thus having full control over the exposure and there are less chances of fluctuations in exposure values as set by you according to prevailing lighting conditions. There is 'bulb' setting which u can use for longer exposures say in night and close when done with, may be several seconds to hours.
No comments:
Post a Comment