arrow9 Comments
  1. kmcs53
    Jan 02 - 10:17 am

    Just wanted to say thanks

  2. Eric D. Brown
    Jan 02 - 5:16 pm

    Great tutorial…very thorough and informative. Thanks!

  3. Erik
    Jan 02 - 8:26 pm

    hi, this is slightly on the side, but i’d like to take the opportunity to ask a question that i’m always left with after reading articles like this.

    in regard to small apertures and deep depth of field, dof will increase with the distance between the photographer and the subject(rarely stressed, go close if you want bokeh!). further, lenses usually indicate infinite focus beyond 3 meters (give or take) if you set the lens at its farthest focus distance. also its said that most lenses have a “sweet spot” were they’re at their sharpest, taking into account general and corner sharpness. this usually occurs around f/5.6-f/8 (give or take). then there is the issue of diffraction often occurring beyond f/11 or so.

    in the example from vegas the palm trees in the foreground are definitely farther away than 3 meters. so why would i gain anything from stopping down beyond the sweet spot, or say f/11, when there is nothing in the picture that’s really close to the camera?

    this might seem like a bit of a rant, but genuinely just curious. Thanks!

    • Eric
      Jan 02 - 9:25 pm

      @Erik – Very good point regarding depth of field, sweet spots and diffraction. These topics go beyond the scope of the current article. I chose these images as examples to show the differences between minimum and maximum apertures – in each case I used the extreme ends of the aperture settings.

      As you pointed out, the use of f/22 is not really required for that image to capture the depth of field that I was after – since I was probably 20′ or 30′ away from the trees. I actually started to touch on the “distance to subject” concept in the post, but decided against it for the sake of keeping the concepts in this post simple. Your point is a very good one and is well taken. Perhaps I’ll delve into these other concepts in a later post as a follow up.

  4. David
    Jan 05 - 10:42 am

    Thanks Eric.

    I was a bit confused about those topics. Now they’re clearer.

  5. Anita Potter
    Jan 05 - 10:42 am

    Thank you so much for this article. I have a kit lens with the Nikon D40 and I understand how to use it better. I also now understand depth of field since you put it into terms that I understood. So yay and thank you!

  6. Bradley Garrett
    Jan 05 - 11:02 am

    This was extremely helpful and is well written, thanks for not geeking out. Your post will help me to discuss what I have been doing without ever learning the technical reasons why I was doing it! Thanks!

  7. Skay
    Nov 15 - 9:38 pm

    Great explanation. Thanks

  8. Arup Bhowal
    Jan 08 - 2:22 pm

    A real helpful discussion for me. Thanx.

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