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Camera Simulator Assignment

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Amanda Beaumont

on 15 February 2013

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Transcript of Camera Simulator Assignment

2013 2009 2010 2011 2012 0 + - = 9 8 7 1 2 3 4 5 6 c The Exposure Triangle ISO What happens when you change the ISO, aperture, or shutter speed on a camera? Finally lets look at shutter speed Here are my original notes Now lets look at ISO! First let's start with: Aperture! Bibliography http://www.dryreading.com/camera/index.html Camera Simulator Assignment Aperture Shutter Speed Answer: Lot's of stuff! Let me explain... Aperture: The size of the opening in the lens when a picture is taken small f-stop=larger hole=more light=isolates subject from background
large f-stop=smaller hole=less light=blends subject to background measured in f-stops or f numbers Moving from one f number to the next halves the size of the opening (lower f numbers double the amount) Examples: When you move from f2.8 to f4 you decrease the light entering the camera by one stop(halving the exposure)

When you move from f8 to f5.6 you increase the light entering the camera by one stop(doubling the exposure) ISO (international standards organization): how sensitive film is to light. Or in digital photography it measures the sensitivity of the image sensor Measured in numbers. the lower the number, the lower the sensitivity of the film and the finer the grain in the pictures you are taking High ISO settings are used in dark situations to get faster shutter speeds. The only problem is that the shot gets noisier. Noise is most visible in large blank areas og a picture. 100 ISO is the "normal" setting and will give you a higher image quality EXAMPLE: If you changed you ISO from 100 to 400 you will be able to shoot at higher shutter speeds and smaller apertures 4 QUESTIONS WHEN CHOOSING ISO:
1. light- is the subject well lit?
2. grain- do I want a noise-free shot or can some noise be accepted?
3. tripod- should I use a tripod?
4. moving subject- Is my subject moving or stationary? lots of light+little grain+using a tripod+stationary subject=low ISO
dark+accept noise+no tripod+moving subject=high ISO Shutter Speed: amount of time that the shutter is open the shutter is a small plastic or cloth sheet that opens and closes to allow light onto the sensor or film shutter speed is measured in seconds (or fractions of seconds) in most cases you will use 1/60th of a second or faster if using a low shutter speed you will need to use a tripod or built in image stabilization increasing shutter speed and decreasing aperture by one stop should give you similar exposure levels slow shutter speed= Blurry photograph slow shutter speed can be used to create an effect of motion long focal lengths can can accentuate the amount of camera shake which will then cause you to have a faster shutter speed THE END http://camerasim.com/camera-simulator/ http://bb.spsd.sk.ca/bbcswebdav/pid-135464-dt-content-rid-562807_1/courses/1213_Photo20_S2/Exposure%20triangle%5B1%5D%281%29.pdf http://bb.spsd.sk.ca/bbcswebdav/pid-135464-dt-content-rid-562781_1/courses/1213_Photo20_S2/Basic_Camera_Controls.pdf
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