ISO contact sheet

ISO measures the sensitivity that your camera has to light. It is useful to manually change the exposure on your camera when natural light levels are low or high. If there is not enough accessible light the ISO can be changed to let more light in however this can result in grainy pictures. We can use ISO to our advantage for example if we want our photos to be darker we can change it to suit the style. in this photo bellow we can see the effect that the ISO is having on the colors in the photo.  the number of pixels does not change however they are just more viable, we call this noise.

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Exploring Light And Tone

  • The term ‘ISO’ stands for ‘International Organisation for Standardization.
  • ISO can be adjusted to change how sensitive the camera is to light.
    • If the ISO number is low, for example 100, it is less sensitive to the light.
      • A low ISO number would be used in an area with lots of light.
    • If the ISO number is high, for example 1600 then it is more sensitive to the light.
      • This would be used in an area with not much light.
      • A higher ISO number causes more noise in the photograph and so reduces the quality of it.

 

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  • Below is my contact sheet of pictures taken of paper and other objects that can be easily shaped and manipulated.
    • A ISO number of 800 was used on the darker images to create a more dramatic photograph and an ISO number of 1600 was used on the brighter images to balance out the shoo
      t and show the difference that the ISO number makes.

ISO

ISO measures the sensitivity of the image sensor; this is measured in numbers [100,200,300]
Higher ISO settings are generally used in darker situations to get faster shutter speeds - however the higher the ISO the noisier the shots The lower the number the less sensitive the camera is to light and the finer the grain e.g a low IOS setting will be used when there is plenty of light and the subject is stationary Image result for iso camera settings

Exploring Light Tone and ISO

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ISO in regards to the way that it affects the camera is the amount of light that is available to your camera.ISO stands for the International Organization for Standardization, which is the governing body that sets the ratings for the sensitivity of a camera. The term was originally was brought over from film as it was known as; Film Speed’

The lower that the ISO number is the less sensitive it id to the light in the surrounding environment, the high higher the number is the greater the sense it is. It the most important part of the camera and if used correctly it can drastically affect the way that your image turns out. Higher ISO is normally should be used in low light situations where flash cannot be used to allow more light into the image, so when you have a higher ISO the camera is being more sensitive to light and it tries to get more into it.

However, the higher the ISO the greater the noise (Graininess) is increased in the image, which lowers the overall look of the image.

Having a lower ISO on your camera won’t only decrease the amount of noise in the image it will also help to produce a greater colour range show the greater shadows and highlights within the image.

ISO is also affected by shutter speed, for example, if you were shooting a fast-moving subject and  need to capture an image quickly you would use a higher ISO                                                                           ISO Speed Example: ISO

ISO 100 – 1 second                                                                                                        ISO 200 – 1/2 of a second                                                                                        ISO 400 – 1/4 of a second
ISO 800 – 1/8 of a second                                                                                           ISO 1600 – 1/15 of a second                                                                                        ISO 3200 – 1/30 of a second

As the ISO increases the sensitivity actually doubles so, ISO 200 is twice more sensitive than ISO 100, while ISO 400 is twice more

Related imagesensitive than ISO 200, which means that it takes less time to capture the image as less light is coming into the camera.

Homework Assignment 1

Task – Take 150-250 photos that explore shape, pattern, line, repetition, symmetry, shadow, tone, curves, angles, edges

Locations – Castle quay, around the harbour

Subjects – roof in castle quay, pattern of balconies of castle quay, any patterns/repetition around the harbour.

Lighting – natural light

Camera settings – Handheld, ISO 200-400, Shutter speed 1/60, Varying aperture depending on how close the subject is.

Concept – to capture patterns in everyday items and turn them into something interesting.