and how can i adjust the contrast with a canon A630 camera with 8 megapixels? :) if possible that is
2007-12-30 10:05:44 · 5 answers · asked by Anonymous in Arts & Humanities ➔ Visual Arts ➔ Photography
Hello Samantha.
Inside your lens there is a diaphragm which is made up of very thin pieces of metal. These pieces of metal can open and close to form an opening called the aperture or f-stop. The size of the opening is shown by numbers, usually on your lens. The smaller the number, such as f2 or f2.8, the larger the opening. When your lens is at f2 (or whatever the smallest number is) it is "wide open". The larger the number, such as f11 or f16, the smaller the opening. When your lens is at the largest number it is "stopped down".
The larger the opening the more light admitted and the faster the shutter speed. The smaller the opening the less light admitted and the slower the shutter speed.
Here is an example which is for illustration only.
f2 @ 1/1000 sec.
f2.8 @ 1/500 sec.
f4 @ 1/250 sec.
f5.6 @ 1/125 sec.
f8 @ 1/60 sec.
f11 @ 1/30 sec.
f16 @ 1/15 sec.
Hope this helps.
2007-12-30 11:38:25 · answer #1 · answered by EDWIN 7 · 0⤊ 0⤋
You don't have a direct adjustment to contrast in the A630. See page 61 of your advanced manual for "My Colors" options where you can make certain colors more vivid than others, though. You can even select which colors to accentuate.
You can adjust contrast easily in virtually any image adjusting program in existence. (Picasa, GIMP, Photoshop, etc.)
You already have good answers about aperture. See page 57 of your advanced manual for info on adjusting aperture via exposure compensation or see pages 45 and 46 for aperture adjustments directly through the Av and M modes.
2007-12-30 16:47:08 · answer #2 · answered by Picture Taker 7 · 0⤊ 0⤋
Two questions. Not sure about the second one.
In optics, an aperture is a hole or an opening through which light is admitted.
It is your F stop numbers. The larger the number the smaller the opening. Aperture will also control the Depth of your field of focus.
2007-12-30 10:11:53 · answer #3 · answered by Mere Mortal 7 · 3⤊ 0⤋
Mere Mortal has nothing to do!!!!!!!!!!!!!!!!!!!
2007-12-31 11:03:58 · answer #4 · answered by Polyhistor 7 · 0⤊ 0⤋
aperture effects depth and the amount of light hits the sensor/film - look it up in wikipedia or such
for strong contrast in your images user lighting or shoot high contrast scenes
a
2007-12-30 10:19:16 · answer #5 · answered by Antoni 7 · 3⤊ 0⤋