Photography LO2!
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Photography LO2!

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    Photography LO2! Photography LO2! Document Transcript

    • Aperture (AV mode) Aperture Aperture is the name for the hole in a lens which controls the depth of field in a photograph. The main purpose of using aperture-priority mode is to control the depth of field. Depth of field refers to the range of distance that appears acceptably sharp. The smaller the F Number, The larger the hole in the lens. As more light is let in the camera due to the large hole, it means that the depth of field does not occur as well as a larger F Number. As you can see, the higher the F number, the smaller the hole in the lens or aperture. Thus meaning a much greater depth of field as less light is let in the camera.
    • Here the photograph has been taken using a Smaller F Number of F/4.5. This has a wide aperture due to one image being the central focus. The image was taken close to the camera to enhance the effect of what large aperture can create. Here the F Number on this photograph was F/11. This starts to become more clear as depth of field is starting to be seen across the image. Here the Photograph was taken at F/29. This is clear as the small aperture creates a much larger depth of field due to full image being clear and you can see objects such as the Rubbish Bin without Noise.
    • Shutter Speed TV (Time value) Mode Shutter Speed Shutter speed or exposure time as it is also known, is the length of time a camera's shutter is open when taking a photograph As you can see on the chart that The smaller the number the faster the shutter opens and closes meaning less light can hit the camera. The slower the shutter speed, the longer the time passes from when you press the button on the camera to when it is taken. Thus meaning more light is let in and images may become like that one at the bottom of the chart.
    • This photograph was taken at an exposure time of 1/200 of a second. This was taken quicker as it is designed to capture the moving car and had to allow as little light as possible. The photograph was taken at a slower shutter speed of 1/15 of a second meaning the camera took longer to react and ultimately came out blurred. It is just quick enough to capture what the subject is in the photograph. The Photograph was taken at a very slow exposure time of 1/4of a second. This meant that not only would the photograph be blurred but it would allow that much light that the image would be very difficult to see.
    • ISO settings The ISO setting on a camera changes how sensitive the sensor is to light. The lower the ISO, the less sensitive it is to light meaning that it will capture a better quality Photograph. Noise being the grains that appear on a image that may have also been caused due to camera shake. Using a larger ISO on a camera would mean that it will be more sensitive to light, producing a bad image as it would have more Noise. When image quality needs to be very high, a low ISO speed is required to avoid noise!
    • This photograph was taken at an ISO of 1600. This is clear because the photograph has a lot of Noise and grain in it. This has become blurry due to having much more light than needed in the image. As it is taken so quickly there is not enough time to capture everything meaning it will not receive enough light. This Photograph was taken at an ISO of 800 as it has a lot of light such as the one taken with 1600 ISO, however this starts to show less grain and more sharpness on the object. This is less sensitive to light however still lacks the detail of a lower ISO. This photograph was taken at a much lower ISO of 400. It is taken at a slower speed to receive more light on the sensor. A lot more quality and sharpness is seen across the whole photograph because it has time to steady itself and capture the full image at a natural pace.
    • White Balance White Balance is altering the way the camera sees White. White Balance is used to change the way the / photographs are taken, and sometimes is vital to create a photograph suitable to that climate around you. Using the cloudy setting in bright daylight will give your image a warmer, yellow tint to it or the Tungsten setting to make the image blue and more abstract. There are many temperatures when looking at white balance and you can alter an image to whatever colour you wish by taking in certain ways.
    • Daylight Shade Cloudy Tungsten The photographs taken with Tungsten and Daylight are very different, However the cloudy setting does very little to change the appearance of the photograph. The shade setting brings out the colour that the natural daylight did not bring, this was found absurd as the shade itself became the brightest setting that was tried. The Tungsten gives a more peculiar impression to the photograph and this may be used when capturing something more exciting such as an moving object.
    • Original image Cropped image- This technique takes away parts of the photograph you do not want to be visible, such as here the top of the building has been cut off from the original as that was adding more of a darker tone to the image.
    • Levels This tool on the left is found in Photoshop and used to tilt the levels to whatever colour or brightness you choose. The brightness can also be controlled in certain parts of the image and not the full photograph. For example here the original image has had a sharper improvement towards the top in the centre.
    • Dodging and Burning- Dodging has predominantly been used to bring out the colour in the parts where the natural daylight has not brought out. Burning has been used to darken the middle stairway to add to the detail that was already there. Colour Adjustments such as Hue and saturation have been used to tilt the colour balance to more of a green image.