Day 12 | ISO and Shutter Speed Assignment 2
In yesterday’s assignment, you noticed that each time you doubled your ISO it was twice as sensitive. Our math skills are going to come into play here. Yes, I said math skills. Your teacher was right, you will use math after High School and here we are. No worries, you can get this.
By adjusting the ISO and shutter speed in doubles and halves you will get the same mathematical exposure. Let me explain further.
Controlling The Water
1. With my ISO set at 200 and my shutter speed set at 1/50 of a second, I have just reduced the flow of water in half; you will need to leave the faucet on twice as long. By doubling the ISO and halving the shutter speed you again will get the same exposure.
2. With my ISO set at 800 and my shutter speed set at 1/200 of a second. I have now just doubled how much water is coming from the faucet. Now I only have to leave the faucet on half the time.
Today’s Takeaways and To Do’s:
1. Follow the examples above in numbers 1 and 2, set the exact settings (first step 1), take a picture. What did you notice?
2. Now set your settings exactly as shown in #2 and take a picture. What did you notice?
In the above example, what is the correct shutter speed with your cameras ISO set at 1600?
Which ISO would we chose if our shutter speed is 1/800 second?
Great job today! Seriously! See you tomorrow.