Photography basics – Aperture

 

“When you narrow down your range and are looking through just that narrow aperture of the lens, the intensity of what you see is so much greater.” ~ Michael Snow

Practice

After the first workshop I went out with my camera to practice my skills on aperture, to try and understand it further.

  1. Here on an f.stop of 8 the subject is in focus, and so is the wall behind her. However the background begins to fade out as it gets further and further away. The sun was situated behind the subject, so there is a small rim lighting effect, but also there is over exposure with areas of the photo becoming near pure white. This could be counteracted by using a quicker shutter speed if the aperture was in priority.f.8 copy 2
  2. Here on f.4 the subject is in focus, with a crisp outline around her that sits on top of the blurred out backgroundf4 copy
  3. This is seen in this photo too however there is more definition and contrast between the subject and the background as there is no bright sky overexposing any of the background:DSC_1596.jpg4. Here is an example of where I was able to use aperture to isolate a very small section of the image, which works very well with subjects such as flowers.f4vlow depth of field copy

    5. On a larger aperture of f.11/16/22 the backgrounds of the image become much more detailed, however because the diameter of the lens is smaller less light is let through. These images are on f.11, and the background can be seen as in focus as well as the subject (actually the subject is a little blurry – probably because I tried to have the shutter speed at 1/60 when I should have increased the ISO).

    6. Framing with aperture – here I practiced using a small f. to frame a blurry section of the image f5.6 small isolated blur copy

    Aperture and its effect on light

Aperture has an effect on how much light is let onto the sensor. Therefore if you want aperture to have priority, you have to change either the ISO or the shutter speed.

1.bright cuz low fstopHere is an example of the image shown earlier, where the shutter speed was set too long. Because sun is behind the subject, the light is very bright and at a low f. too much light is being let in. I changed the shutter speed from 1/125 to 1/250 so that the shutter was open for less time so less light was let in through the wider lens.

2.  Here is an example of the opposite where you have a large f. where less light is let through due to a smaller opening. This creates a darker image. To self this problem you can increase the ISO, but to keep a better image quality choosing a slower shutter speed or adding additional light should be tried first.

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