julie asked in Consumer ElectronicsCameras · 1 month ago

What setting is best on a Sony digital camera for best portrait but blurred background?

4 Answers

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  • keerok
    Lv 7
    1 month ago

    What you are looking for is a short depth of field (DOF). It is best achieved by positioning the camera as close as possible to the subject with the background as far away as possible then use the longest focal length of the lens (zoom in) and set to the widest aperture size (smallest f/number) with the camera in aperture priority mode and ISO at the lowest allowable setting.

  • Newton
    Lv 6
    1 month ago

    For a blurred background you would want a telephoto lens. Most people use a 85-100mm lens for portraits for that reason. You can blur the background even more with a larger aperture. The larger the aperture, the more blurred the background is. Use an aperture like f/2 or f/.8 if possible.

  • Sumi
    Lv 7
    1 month ago

    For portraits with a blurred background, you will want to use a lens with a focal length of at least 50mm.  The longer the focal length, the shallower the depth of field will be thus providing a more blurred background.  Furthermore, longer focal length lenses will flatten the perspective thus producing a more pleasing rendition of the human face.  Flattening of the perspective makes people's face look more attractive than using shorter lenses. 

    In addition to using long, telephoto lenses, you can blur the background by using a larger aperture.  Avoid apertures smaller than about f/5.6.  The larger the aperture, the shallower the depth of filed will be.  Therefore, you should use a larger aperture like f/2.8, f/4 to blur out backgrounds.

    While these are the two main ways of blurring out backgrounds, you may still not be able to produce a blurred background if you are using a camera with a small sensor.  Small sensors require shorter focal lengths for any given angle of view.  For example, a typical point-and-shoot camera will have a very small 1/2.7" to 1/2.3" sensor which typically has a crop factor of about 5.6x.  This means that even shooting at f/2.8, you will still produce a very large depth of field equal to about f/16 on a full-frame camera.  This happens because the shorter focal length being used in these smaller-sensor cameras.  Multiply the focal length by the crop factor to get an equivalent focal length in 35mm format, but also multiply the aperture by the crop factor to get the equivalent depth of field, too.  For example, on a camera with a 1/2.7" sensor which has a crop factor of 5.6x, an equivalent focal length of 85mm (a typical portrait lens on a full-frame camera) is about 15mm.  At 15mm it's nearly impossible to blur out backgrounds even at f/2.8 because even at f/2.8 with a 15mm your depth of field is equal to f/16 at 85mm on a full-frame camera.

  • 1 month ago

    Sony has nothing to do with it. On any camera if you want a shallow depth of field, (blurred background), with a portrait, you need to use a focal length somewhere in the 80mm to 150mm range. Then set the aperture to it's largest value, (which is the SMALLEST fstop number). In other words, as example, you want an aperture of f2.8, not f11. You do not state what Sony you have, but depending on the lens, it may close down the aperture as you increase the focal length. Just use whatever the largest aperture the camera will allow at the focal length ranges given above.

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