Aperture, Shutter Speed, Focal Length and ISO
Having been taking pictures based on intuition and gut feeling for far too long, a photographer friend of mine decided to give me a small lesson on aperture, shutter speed, focal length and ISO and how all affect a picture’s exposure. He told me I already took good pictures, but I did not know how to visualize what I see in my brain into the picture. I agree with that.
He taught me the relationship of shutter speed and aperture and how an amateur like me can just shoot with Aperture Priority mode without having to worry about pictures being too dark or too bright. Because with the camera (Nikon D5100) and lens (Nikkor 18-105 mm) that I have, at a given aperture, there are about 18 shutter speed to choose from. If I shoot in Shutter Speed priority mode, in extreme conditions, at a given shutter speed, the camera will only have about 8 full f-stops to choose from (correct me if I am wrong here) But of course, if we are concerned about the level of motion we want to show, an amateur like me will probably have to go for shutter priority mode so there is not much complication involved.
At the end of the lesson, he asked me to take four pictures, all taken in Aperture Priority mode with my only 18-105 lens according to these topics:
1. Shallow Depth of Field
2. Deep Depth of Field
3. Freezing motion
4. Showing motion
The followings are my take on the assignment: