Smart Object & Blur

[MahaB82A]

In this video blurring part is converted into smart object. I wish to know whether it is advisable to covert blurring part into smart object.  

Motion Blur Effect

Time 0.48

[jane-e · Accepted solution]

@MahaB82A 

The advantage of creating an SO before applying any filter is that the filter can be edited after the fact and is non-destructive. If you do not create an SO first, the filter is destructive and cannot be edited.

This includes any blur, because blurring is a filter. 

Jane

[Bojan Živković · Accepted solution]

I'm not entirely sure what you want to ask. If you create a smart object before applying a blur, you gain the ability to adjust the amount of blur and restrict it to specific areas of the image, as shown in your example using a filter mask that will be automatically generated. You can achieve a similar effect without a smart object by duplicating the image layer, applying the blur to the top layer, and then masking or erasing parts of the upper layer. However, you will lose the flexibility mentioned by @jane-e 

[MahaB82A]

Thanks for all.