Digital Slr For Dummies

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Teach me a little more about Aperture and Shutter Speed?

Hello,
So I've read the book "Digital SLR Cameras and Photography for Dummies," and understand in full what Aperture, ISO, and Shutter Speed are. What I don't understand is how to utilize them. When I get a DSLR in a few months, I would like to be able to know how to set these things so I get what I want from my photography. How do you know what shutter speed to set, and what aperture to set? How do I know how high or high low to keep the ISO? I think I understand ISO the best, followed by shutter speed, but I have no idea what I'm supposed to do to set the ISO. I'm going to be doing all types of photography out there, so I really need to know how to set these things in a lot of different situations and such.

Thanks for your help!

The Aperture basically controls how much of your lens is open and how much light is allowed in when you take a picture. Your shutter speed controls how long your shutter is open for when you take a picture.

Both affect how much light hits the camera's sensor. The smaller the aperture number, the more light hits the sensor, but you get less depth of field with lower numbers. Less will be in focus. This may be good or bad depending on your goals. For example,it may be beneficial to make your background less focused and less distracting.

The slower the shutter speed, the more light will hit the sensor but this increased opening time means motion will appear blurry. The motion includes both camera movement and subject movement. I can usually shoot at about 1/60th of a second without notable camera movement. Shooting something like sports will require a faster shutter speed. Using a tripod will allow you to shoot non-moving subjects at much lower speeds.

It sounds like you understand ISO which is how sensitive the sensor it too light. Using a higher ISO allows you to use either a faster shutter speed or get more depth of field with your aperture, but may mean a more grainy image

Having a properly exposed image (the right amount of light hitting the sensor) is a trade-off between these controls. I find a good way to start is to use your shutter priority control, setting your shutter speed for a rate that will freeze any motion (maybe 1/250 if you are outside with lots of light and maybe 1/60 if there is less light) and setting your ISO at 100. You can then see if you like the aperture that gives you. If you do not have enough light for a proper exposure, then bump up your ISO.



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Digital SLR Settings and Shortcuts For Dummies 0470917636


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