Why Camera? Why? – Part 3


I am getting a blurry image!!!


Take a look at the image below. Notice that it is not sharp?

wrong-focus-point

The Selected Focus Point was in front of the tiger – making the road in front the subject

Well assuming that it is not done on purpose, there are 2 conditions that we need to look at 

  1. Was the focus point on the subject?
  2. Is the subject moving? if yes, is the shutter speed fast enough?
  3. Is the subject moving? If no, is the shutter speed fast enough?

The first point means that you need to ensure that you have the subject being treated as the point to focus on by the camera. Simplest way to achieve that is to make sure that you have your selected focus point/s on the subject to ensure that the camera is not acquiring focus at something else. Well, assuming you are using AF and are not on Manual Focussing here.

Shutter Speed : What is fast enough shutter speed? 

It depends on the situation.

For a steady subject and a hand held shot, it would all depend on how shaky/stable your hands are. The old school rule of thumb used to be that any speed slower than 1/focal length would lead to higher chances of shaky images. With IS and VR, these days it has gone down slower than that by almost 2 stops.

For a moving subject, it depends on the speed of the subjects movement. The faster the subject moves, the faster your shutter speed needs to be to freeze the motion.

Beyond the above three points, there really can’t be any reason to achieve blurry images so the next time you end up with blurry images, remember this. It is either the focussing or the shutter speed.

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