So this section, Photo Basics, doesn't have a lot to do with this camera in particular, it's just a little bit on general photography and so if you wanna take a photography class, this is just the tip of the iceberg of things that you're gonna wanna know about. First of, this is a single lens reflex camera. Single lens means we have one lens on the camera. We have wide angle lenses, we have telephoto lenses, we have lots of different lenses that we can interchange on this camera. In the lens itself is an aperture unit and this is one the first of three different ways of controlling the amount of light coming in the camera. And so this opens or closes to various different sizes as you can see here as we're closing down our aperture to different F stops, different aperture settings to control the amount of light. And so this is as I say, the first of three different ways of controlling the light coming into the camera. This not only controls the amount of light coming through the lens bu...
t it also controls the depth of field, or how much is in focus in any given photograph. With an aperture like 1.4 you're likely to have very shallow depth of field, as you can see by those red hash marks over on the right hand side. As we stop our apertures down, we're gonna get more and more depth of field, and this is one of the creative ways that we can control the look of our photographs. Stopping it down to f/22 is gonna give us our maximum depth of field where it's gonna give us as much in focus as possible. As light continues its way into the camera it will hit the mirror and that's the reflex portion of single lens reflex. It reflexes the light upward onto a focusing screen and creates an image right there, which we can see through the view finder via a prism system. And so when you look through the viewfinder this is the path that the light is going. Now when it's time to take the photo, we get the mirror up and out of the way so that light can get back to the image sensor. Before it gets there it needs to get passed the shutter unit itself, and that has two parts to it; there's the first curtain blocking the light and a second curtain waiting in the wings. So light will then come into the sensor for its short period of time before the second curtain closes in and terminates the exposure. The mirror returns so that you can see what's going on. And so shutter speeds are the second way of controlling the amount of light being recorded by our sensor, and there's a variety of shutter speeds from one fourth thousandth of a second, down to 30 seconds, and those will be used with varying effects with subjects that are moving. With all the cameras out on the market one of the most important things to know is what size sensor is in your camera. There are a variety of sensors in different cameras and the one used in this camera is what I'm kinda considering medium size sensor. It's one of the larger ones out there but not the largest. The largest are the ones being used by Canon are based off of 35 millimeter film, and so they took the image area and just replicated it with a sensor, and that is known as a full frame sensor, with a crop factor that is 1. which means it's the same as full frame. There are a variety of other sensors. This is using an APS-C sensor that has a crop factor of 1.6, so it makes lenses look 1.6 times more powerful than they do with a full frame camera, and we'll talk a little bit more about that when we get into the lens section on the camera. When you wanna attach a strap to the camera, just make sure that you tuck that tail end on the bottom side of that strap adjuster; it keeps just a little bit more pressure and it's less likely to work its way loose. And finally holding the camera. Obviously you're gonna grip the camera with your right hand, the question is what is your left hand doing? Is your thumb on the top or the bottom? And it is a little bit better to have your thumb on the top side, brings your elbows a little bit closer into your torso where you'll have a little bit more stability in holding the camera, which means you'll be able to hold it steady for even slower shutter speeds, so it's a slightly preferred system. If you are interested in photography classes, you may wanna take a look at some of the other photography classes available here at Creative Live. I have a basic three hour class so if you wanna know more about shutter speeds and apertures, and lighting, and all of those sorts of things, the three hour class will get you started. If you really want the in-depth class, you'll wanna take a look at the 27 hour fundamentals of photography. That gets you through just about every nook and cranny of getting to know photography. And so take a look at those at Creative Live, along with many other great courses here on the catalog.