PetaPixel

One Advantage of the Small Sensors in Cell Phone Cameras

Cell phone cameras have pretty poor image quality when compared with point-and-shoot cameras due to their small sensors, but one advantage they have over compact cameras is a naturally deep depth of field. That was particularly useful for this YouTube user in capturing some sharp video of his new motorcycle — something that would have been much more difficult using a standard point-and-shoot.

(via Fstoppers)


 
 
  • http://twitter.com/richardford Richard Ford

    Michael,

    Small sensors DO NOT CHANGE DoF.

    It has nothing to do with sensor size.

    It has to do with focal length of lens, aperture and circle of confusion.

    Did everyone forget what they were taught with film?  No one ever spoke like this about 135 or 110 compared to 120 or 4×5. 

    :-S
     

  • manuel g

    if you hold everything you mentioned constant, sensor size DOES affect the DoF if you want an equivalent field of view

    http://www.bobatkins.com/photography/technical/digitaldof.html
    http://www.cambridgeincolour.com/tutorials/digital-camera-sensor-size.htm

    plus smaller sensors -> smaller lenses/apertures -> naturally shallower DoF

  • manuel g

    oops – i meant naturally “deeper” DoF

  • http://twitter.com/richardford Richard Ford

    Correct.  The use of a small sensor – then forces the use of a certain focal length (friggin wide) and then relatively small circles of confusion (small lens, small physical opening, super wide FOV).  Then there is the deeper DoF.

    The sensor didn’t cause the DoF to change.  It mandated an optical setup that causes the DoF to change.

    Take a 4×5 image and crop out a 1/1.7 section of the middle – the DoF doesn’t magically  change on the print.

    “Internet truths”…… crikey.

  • Matt

    Then why does a 50mm f/1.8 have a shallower depth of field on a full frame camera than an aps-c sensor?

  • Matt

    Then why does a 50mm f/1.8 have a shallower depth of field on a full frame camera than an aps-c sensor?

  • Matt

    Given the same aperture. Whoops, forgot to add that.

  • Seth Christie

    It doesn’t. The issue is that to get the same FoV you have to move further back, thereby exending the DoF. With a bigger sensor, you have to get closer to your subject to fill the same FoV, so your DoF increases.

    I understand the argument about terminology… but it is a pretty technical one. As most people are concerned, sensor size impacts DoF when you start looking at 35mm equivalency.

  • kendon

    the internet will never learn the laws of optics. so sad…

  • Blueeyedpop

    Can’t we throw the Airy disk in here too?

  • http://www.patrickhallphotography.com Patrick Hall

    The better rebuttal is why can my point and shoot camera never produce a background with any type of bookah? Everything is considerably more sharp than the equivalent frame on an slr.

    I’d like to see someone create this same video with a full frame camera :)

  • http://www.patrickhallphotography.com Patrick Hall

    The better rebuttal is why can my point and shoot camera never produce a background with any type of bookah? Everything is considerably more sharp than the equivalent frame on an slr.

    I’d like to see someone create this same video with a full frame camera :)

  • http://profiles.google.com/slimspidey Spider- Man

    but how man mega pixels yo!

  • Cedric Chone

    Patrick, I read 2 blogs daily : petapixel and fstoppers and for a second you confused me, I didn’t know which one  I was reading here!