Nathan wrote in post #18113749
Not saying they aren't related. I'm saying it's a concept better saved for their next lesson. I don't think they need to understand stops yet. I think it's enough to understand the general idea that each value controls the amount of light the sensor receives. I believe in conceptual before technical teaching. Ironically, I'm a technical learner... so perhaps it depends on the student. I wouldn't introduce stops too early for the majority of people who "want to take better pictures" versus "want to learn photography."
If they don't know why they need to increase/decrease the amount of light, or why they're getting the results that they are that require said changes, what use is the knowledge of how to do so? "Blurry from movement" is a much less common situation than "too dark/too bright" is going to be if all you do is tell folks to set it to Av and then see what comes out. If folks are shooting bright light (which a lot of folks do when just taking travel snaps), they're going to get a lot of dark images as the camera tries to "push" the bright light down to avg gray and the opposite when shooting in shade with, bright light in the background.
Which leads to the problem that each setting controls light in a different manner and also has a different, secondary effect. At the very least, I'd suggest calling out those secondary effects a little more explicitly.
Shutter: TIME that light is sent to the sensor; controls motion blur in the subject as well as minimizes effects of camera shake
Aperture: AMOUNT of light that is sent to the sensor; controls DoF
ISO: Increases signal gain to amplify effects of light sent to the sensor; directly affects amount of noise visible in image
Overall, the whole things seems too brief and isn't *really* going to result in folks taking better shots than if they just leave their camera in Auto or P and do their thing. For example, nothing covers *why* they would choose a particular aperture, to begin with, for example. So, there is no real basis for the rest of it. And, since aperture does a lot more than just allow the camera to choose a shutter speed that may or may not be "appropriate" they aren't likely to choose one that is right for what they're wanting to begin with.
Setting up a cheat sheet is a great idea; but, making sure that the concepts being presented are actually useful and will lead to better shots than they will get from shooting a P&S needs to point them to solid base concepts first.