7th March 2002, 01:54 AM
7th March 2002, 02:25 AM
Shutter speed is the length of time the shutter is open to let in light.
Aperture size is the size of the aperture hole. Smaller number = bigger aperture.
ISO rating refers to how sensitive the film or sensor is to light.
Here's a nice page that explains more:
7th March 2002, 09:26 AM
7th March 2002, 09:44 AM
when shooting, with modern camera, one usually choose the setting of T/S (shutter priority) or A (aperture priority) nowadays. Why?
If you choose T/S, that means speed is critical for you. You want to have control over the shutter speed. This is especially true in the case of low light photography, where you don't want handshake results to blur photo. As rule of tumb, speed chosen should always higher than the focal length of the lens...then you should be fine.
If you choose A, that means you want to have control over depth of field. Larger aperture will result shallow DOF, and the background will be more out of focus (usually for portrait). Smaller aperture will give you more DOF, and this is usually being chosen when taking landscape photo.
Do remember that A and T/S are inter-related. When you choose T/S priority, changing the value will result the change of the A value too...vice versa.
In macro photography, DOF is important...thus usually one will use aperture priorty. From my experience, if you shoot macro over 1:2, your aperture should be at least f11 to give you satisfying DOF.
Hope this helps.
7th March 2002, 09:46 AM
7th March 2002, 09:55 AM
U r right.
Originally posted by tangcy
If all things remain constant, is it right to say:
1. Small f value, big aperture, big hole, more light go in, vice versa
2. Big aperture, focus on the object, with background blur.
very new to photography, need advise/help.
7th March 2002, 10:02 AM