Photo Tip Tuesday | Dublin, OH Photography

The third and final part of the exposure triangle is called the ISO.

The ISO controls how sensitive your camera’s sensor is to light. If photographing in a dark scene, you would need to increase your ISO because more light is needed to properly expose your subject. If however you are photographing in a bright environment, you would decrease your ISO. BE CAREFUL THOUGH!!!! High ISO settings will create extra grain in your images making them look fuzzy instead of sharp.

ISO increases by double the amount before it and the larger the number, the more sensitive the camera will be to light (See below for example).

Check out this great diagram from to learn more.

What is ISO: camera sensitivity settings (and the best ways to use them)

Photo Tip Tuesday | Dublin, OH Photographer

Two weeks ago I introduced the exposure triangle and discussed aperture. Today, I will talk a little bit about shutter speed.

The shutter speed is also known as the exposure time. Basically, it is the length of time the shutter is open, exposing the sensor to light. If you are photographing a subject in a bright setting, the shutter speed would be faster as to let in less light. When photographing in a low light setting, a  slower shutter speed is needed to allow more light to hit the sensor. If however you set the shutter speed too low, you will have to worry about motion blur from the subject or camera shake from hand holding the camera. One way to avoid camera shake is to use a tripod.

Shutter speeds can also be used in an artistic manner to slow motion or to show blur purposefully. An example of using a slow shutter speed for effect would be the streaks of light from moving traffic or to show the motion of a waterfall. A fast shutter speed can be used to stop an athlete in mid-air or freeze water drops.

Shutter speed is measured in seconds. An example of shutter speed is 1/1000 sec, meaning the shutter is only open for 1/1000 of a second. That’s pretty quick. Most DSLR cameras also allow the user to keep the shutter open for as long as they want. is a great resource to learn more about the exposure triangle and other photo related subjects.

Photo Tip Tuesday | Central Ohio Photography

For the next three weeks I will be discussing the “exposure triangle.” The exposure triangle has, yep you guessed it, three parts. The three parts are aperture, shutter speed, and ISO. This week I will explain aperture.

The aperture determines the amount of light received by the image sensor. It also affects the depth of field, but we will discuss that some other time.

The definition of aperture according to google is “a space through which light passes in an optical or photographic instrument, especially the variable opening by which light enters a camera.” Basically, you can control how much light enters your camera by selecting the size of the opening that allows light in.

The aperture size can be a bit confusing because it seems a little backwards. The smaller the number, f/1.4 for example, the bigger the opening, and the more light allowed to hit the image sensor. The bigger the number, f/16 per say, the smaller the opening, and less light allowed to enter the camera.

Adjustments to the aperture need to be made based on your specific lighting condition. If you are photographing a subject inside, in a poorly lit room, you would want your aperture to be bigger (smaller number) to allow more light to hit the sensor. If you are outside in the bright sunlight, your aperture would need to be smaller (bigger number) so that you image won’t be over exposed.

In the next 2 weeks we will discuss shutter speed and ISO, so don’t forget to stop by.