How to blurr background while focussing object

Moab Man

Senior Member
Aperture. Smaller the number (larger the lens opening) the greater the blur behind your focus point.

Bigger number equals a smaller lens opening and more is in focus.

It's a bit to wrap your brain around. The blur is also affected by how close you are to your subject and how close or far the background is to the subject.
 
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Mark F

Senior Member
Need to know how to blurr background while focussing object...

Regards
Pisean..

Depends on the lens you are using and how much bokeh you want.
The 85mm 1.4 is the champion here for that. Any lens using the largest aperture will give you a shallow field of view making the background out of focus. The larger the aperture, the more background blur you get.



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nickt

Senior Member
You may not get perfect results depending on what lens you have. As the others have said, the lower number you set the aperture to, the more you will see the effect of blurred background. The amount of your image, front to rear, that is in focus is called 'depth of field'. For a blurred background or foreground you want a 'shallow depth of field'. Generally, you will get the best results with the subject very close and the background far away with the lowest f stop available.

These links might be helpful for this question and other things you will be learning about.
Aperture, Shutter Speed, ISO, & Light Explained-Understanding Exposure & Camera Settings - YouTube
Exposure | Understanding Exposure - ISO, Aperture and Shutter Speed Explained
 

mr2_serious

Senior Member
Pretty much what the other guys have stated. Easiest way for me is to get closer to the subject/object and have the subject/object further from the background


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STM

Senior Member
Depth of field is controlled by aperture. The larger the aperture (smaller the number) the less the depth of field. Depth of field control is more difficult with DX format because the focal lengths are shorter (and therefore have greater depth of field). Most zooms are slow compared to primes, which exacebates the problem even more.
 
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