The main purpose of this week’s tutorial was achieving a technique that is changing the focus while shooting. I missed Wednesday’s class, but I attended in Friday’s one.

In Friday’s class, what we were doing was filming an individual who was approaching to camera by adjusting the focus to keep the motion subject clear and sharp.

So the first thing, the most important thing, to do is marking the setting before shooting because this is easy to find out the problem while reviewing. The other thing that is making a mark on the focus so that you can know when to adjust the focus.

We have practised three or four times and we reviewed it. We found that the subject is still a little bit out of focus even though we used a larger aperture, like f8 which I prefer using. I thought the subject can easily be in focus with f8. There were two reasons that made me believe I was right. First of all, the larger number of aperture is used, the deeper depth of field is created. Secondly, the longer distance between camera and subject, the deeper depth of field is generated. My assumption seems to be right based on this theories. However, I missed something that is the size of focal length. The longer focal length is employed, the shallower depth of field is made. So, here is the question. I used the maximum focal length that is approximately 81mm when I made today’s shot. Even though the larger aperture is employed, the influence of focal length is significant. This was the reason that the subject was out of focus. Therefore, the next time, I may be using a much larger aperture to increase the depth of field like f11 or f16, or utilising a shorter focal length.