ISO Photography definition is explained as one of the third components of camera shutter speed explained, defined aperture photography in Camera Photography ISO.
Camera Photography ISO
After checking out my other two posts “Camera Shutter Speed Explained” and “Define Aperture Photography” this is the third and final component that is affected by your settings for controlling the amount of light to take quality photographs.
ISO = Sensor Sensitivity
The ISO is how sensitive your image sensor in your camera is to light. The higher the ISO value, the more sensitive the camera’s sensor will be to the light requiring less light. Just as we have the higher settings you also have the lower the ISO; the less sensitive your camera’s sensor is going to be to the light so the more you will require.
On digital cameras, ISO refers to an artificial boost to the signal of what the sensor has for light. There is not a pure light but rather an amplified light that simulates the same kind of response as a film that gets exposed to light when creating a negative. Both forms of cameras eccentrically operate the same to accomplish the result to reproduce an image. So even though we capture the method differently, the concept is the same.
You could look at ISO as:
- Will give you much richer colours for any photograph reproduction
- You will also find less noise with a cleaner nicer blending or crispness of colours.
- Dull colours will usually result as the ISO numbers increase
- The result of these higher numbers will create more noise the higher you go
When to use High or Low ISO
During bright days or well-lit areas, your camera will require a lower ISO than darker indoor or outdoor time of day going into the evening where you would require more ISO. Ideally you would try to take all your pictures with an ISO of 400 or less. The problem usually arises that you will need to increase the ISO when dealing with photographs when taken indoors and while losing daylight. The Higher ISO causes a graininess from letting into much light that is called noise that reduces the picture quality and causes the dulling effect on colours do to the lower light conditions.
When using your camera on auto, you can set the max ISO number that you will allow your camera to go. Of course, this would be something you would experiment with as each type of camera would allow a different number of settings according to the kind of model and quality of the camera that you’re using. By this, some cameras would be able to offer a good quality photograph at a much higher ISO number compared to others.
You can use auto ISO depending on your camera in a couple of ways for setting up your ISO number. Even though the digital cameras these days are pretty good at choosing all the settings for you to get your shot a lot of auto ISO settings for indoors and darker lighting have a tendency to be off.
Manually setting your ISO
- Nowadays a lot of digital cameras give you an ISO button you can simply click on and see your ISO setting in the control panel, from there to change your setting you just rotate the command dial to the left or right to raise or lower your ISO setting.
- You can go into the menu for most cameras where you can call up the ISO to manually adjust the settings for your number selection through the cameras monitor.
In the manual, you will usually find you can get better results from your camera due to the control you have over your camera when you adjust your settings.
To get a more detailed look at where and how some of the different camera models will allow you to access to change for the ISO you can go to my site at “Best Nikon Cameras.” Here you can choose different models to see videos that will feature different models for the parts of the camera and many other features that you would find in a high-end manual.
As mentioned at the beginning of this post about the three main components, when you increase your shutter speed you will also need to increase ISO to have less light coming in to avoid your pictures from getting overexposed. Below is a chart that shows the relationship of these three components working together.
So as you can see from the picture above the camera photography ISO works in correlation with the shutter speed and aperture settings in the creation of your photographs. As you change the value of one it will reflect on the other two, so whether you work your camera manually or us auto these three settings will always be tied together to control the amount of light you let in the cameras sensor. To get more on ISO photography definition and other photography tips and tricks showing you everything you need to know about using your camera, you can go and receive hundreds of free tutorials from my website.
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” Hi once again, I’m Travis Smithers author of Say It With Photographs where you will find tutorials on photography, editing software, cameras and accessories. The use of post production equipment and their operation to the creation of fantastic gifts for you, friends and family, enjoy. Comments and questions always welcomed here!”