1. Utilize Large Apertures
  2. Utilize the longer focal lengths of the lens
  3. make the lens as close to your object as possible and the background and the object as far apart as possible for a better effect.

If the above three tasks can all be accomplished, then you should be able to get the optimal shallow-depth-of-field effect. But there may be times when you need to decide what are to be given up for a better effect or be restricted by some factors, all of which are hard to avoid, but basically these are the key points to master the shallow depth of field effect.

What’s worth-noting is that the shallow depth-of-field effect has something to do with image sensors. The bigger the size the image sensor is, the easier it is to create the shallow depth-of-field effect, and it is why smaller devices such as cellphones and small cameras are harder to succeed in this effect.

The shallow depth-of-field photographing method is also applicable to filters─when under strong lightings, it is harder to take photos with large apertures, and at times like this, one can rely on the ND to diminish the rays of light that enter the lens. Miveiw has released VND (Variable Neutral Density) filters that combines all intervals into one, which makes it an economic and a more convenient choice.