DSLR or SLR are two terms that are very common in photography.  You have probably heard or seen this if you are into photography at all.  DSLR stands for Digital Single Lens Reflect.  What does that mean?  Well, it means that when you look through the viewfinder that it reflects (usually mirrors or prisms) down through the lens so that it shows the same thing that the camera will see when push the button to take the picture.  With the old point and shoot camera you had to look through a viewfinder, and it was usually an approximate view of what the camera would see.  It was a separate lens in parallel to the lens that the camera was using, so sometimes you could get a slightly different picture than what you saw, especially up close. With current digital point and shoot cameras there is almost never a viewfinder, instead it displays on the back screen so you can see what you are getting so it is a lot more accurate than the old film point and shoot cameras.  I think it is funny that many people don’t know how to use a regular viewfinder any more.  I have, on numerous occasions, passed the camera to someone to take a picture for me, and the ask me, “where is the image?”  I then have to tell them to look through the viewfinder.  I could use the live screen, but it slows things down and is a little less accurate.  There are definitely uses for it, and times for it, but for the most part, I don’t use it.

Leading lines

In this picture it shows an example of leading lines.  Here is a definition of Leading Lines:  Leading lines are lines within an image that leads the eye to another point in the image, or occasionally, out of the image. Anything with a definite line can be a leading line. Fences, bridges, even a shoreline can lead the eye.

So in this example the rope is a Leading Line which leads the eye to the parrot.  Without the rope leading to the parrot, your eyes don’t see it as quick as otherwise.