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  1. #1
    Join Date
    Feb 2006
    Des Plaines, IL

    Lightbulb Bokeh example ... holiday lights

    Okay ... this may be a little extreme, but it will offer a comparison idea for Bokeh at various apertures.

    I used an AF 50mm f/1.4 ... and in manual focus (MF), I set if for OOF operation at about four feet from the tree. You will note, using ONLY the aperture change, I close down the aperture, the background begins to become focused. The light "blossoms" narrow very quickly as you reach f/4 and tighten up dramatically. There are no focus ring changes taking place at all, just aperture settings.

    It graduates through the following settings:

    f/1.4, f/1.7, f/2, f/2.8, f/4, f/5.6, & f/8

    Attachment 42842

    Remember: no zoom lens has an aperture wider than f/2.8

    Doing this with your own lens, you will begin to understand how you can turn a normal, mundane shot into an interesting piece of art. You just have to understand what is going on in there and how to set up your lens for the spectacular, but then again ... when it comes to this ... f/4 is not all that spectacular. Get a wider lens!
    Last edited by DonSchap; 12-21-2008 at 01:29 PM.
    Don Schap - BFA, Digital Photography
    A Photographer Is Forever
    Look, I did not create the optical laws of the Universe ... I simply learned to deal with them.
    Remember: It is usually the GLASS, not the camera (except for moving to Full Frame), that gives you the most improvement in your photography.

    flickr & Sdi

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