Quote:
Originally Posted by lollipop
Thanks for all your help and time. For the most part it is clear, I understand the principle theory of it. I went out at lunch and took some shots at different shutter speed and aperture. The problem is, I don't know in which atmosphere/environment you should change ISO, shutter speed or aperture.
I used ISO 400 and I tried with a large and small aperture and adjusted the shutter speed accordingly.
I'm not quite sure when you'd want to use a slow shutter speed unless you're going for a special effect - usually it's blurred and not as a clear.
I signed up for a basic course in photography.
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Generally, shoot at the lowest iso you can, whenever you can...the quality of the pix will be better, as there will be less grain/noise.
So...when you're outside on a sunny day, try iso 100, and see if you can shoot fast enough...you never want a slow shutter speed, because of the potential for blur. If you are at a race, and you want to blur the background to show speed, you purposely shoot slow, and pan (follow) the subject as it passes. Otherwise, the only reason for shooting somewhat slow, is to enable you to use a smaller aperture...in order to make crisp pictures.
When you use an aperture of 11, or 16, you generally get crystal clear pix. Inside, without a flash, you probably have to up the iso to 400. When I say slow shutter speed, depending on the length of the lens, you might not want to shoot slower than 80 (1/80th of a second), or 100 (1/100th of a second) unless you are using a tripod.
It really is simple, and the more you play, the more you'll see what I'm talking about...the aperture setting is directly related to the shutter speed. You will decide what you are trying to achieve in each pic. If you have a ton of light, (optimum conditions) then you only have to decide on depth of field...once you get above 250 (1/250th of a second) it doesn't much matter how much faster you shoot. At that point, you will be making your decision based on what aperture you desire. Again...unless you are looking for an effect, you might want to use the smallest aperture (highest number) you can. It makes for clear pictures.
DSC_0831 on Flickr - Photo Sharing!
In this pic, you notice all the space above the girl's head. It kind of throws the balance off in the picture. I always try to bend down, and shoot directly at kids, pets, etc...although this angle does make her appear very small, because you are shooting down at her. It might be desireable, as she is a little girl.
Your framing will change, once you get used to looking at things through a viewfinder. You will find yourself seeing things as pictures, even though you don't have your camera with you.
The tendency is to pay attention to focusing, looking at the meter in the viewfinder, and god knows what else, and we forget to frame the pic just before we take the shot. Those lines in the viewfinder can be annoying sometimes, and we end up moving the camera just to see the subject above/below those lines.