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  • Writer's pictureNicole Pollard

March 12th- Introduction to ISO

Updated: Mar 12


  1. ISO Lesson and HandoutISO in photography refers to the sensitivity of your camera's sensor to light. A higher ISO setting makes the sensor more sensitive to light, allowing you to shoot in low-light conditions or capture fast-moving subjects without blur. However, increasing the ISO can also introduce digital noise or graininess to your photos. On the other hand, a lower ISO setting is less sensitive to light, producing cleaner images but requiring more light for proper exposure.Understanding ISO is essential for photographers as it plays a crucial role in determining the overall exposure of a photo. It is typically used in conjunction with aperture and shutter speed to achieve the desired exposure settings for a particular shot. Experimenting with different ISO settings can help you capture the perfect image in various lighting conditions while maintaining image quality.


What is the difference between these three images?


The answer, as you may have guessed, is that they were all taken when the camera was set to a different ISO.


The lower the ISO number, the less sensitive the camera is to the light, while a higher ISO number increases the sensitivity of your camera.





4. ISO Lab


Essential Question: What do you notice about the exposure of your image with an increase of ISO?

Choose ONE station to shoot at.

a) Change the camera to M on the mode dial and manual focus.


​b) Change your camera settings to:


Shutter-speed- 1/100


Aperture- f 4.5


ISO- Set your iso at EVERY ISO, taking an image at 100, 200, 400, 800, 1600, 3200, 6400


c) Find the ISO settings on the camera, and take multiple photographs of the same composition.


You should start with the lowest ISO setting and gradually work your way up to the highest so that you can see the difference between each of the ISO settings in your photographs.

Shoot at every ISO.


Throw your photos into a collage. Label with the ISO you shot at. Submit to "ISO Lab" in Schoology


Your finished product should look like this:



OR This





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