Results 1 to 30 of 30

Thread: How Aperture Selection Affects DOF and Background

  1. #1
    Co-Founder James Shadle's Avatar
    Join Date
    Oct 2007
    Location
    Valrico, Fl
    Posts
    5,108
    Threads
    1,419
    Thank You Posts
    Blog Entries
    11

    Default How Aperture Selection Affects DOF and Background

    Attached Images Attached Images
     
    How Aperture Selection Affects DOF and Background

    Nikon 600mm Lens at about 30' This image is F4

  2. #2
    Co-Founder James Shadle's Avatar
    Join Date
    Oct 2007
    Location
    Valrico, Fl
    Posts
    5,108
    Threads
    1,419
    Thank You Posts
    Blog Entries
    11

    Default

    Attached Images Attached Images
     
    Nikon 600mm Lens at about 30' This image is F5.6

  3. #3
    Co-Founder James Shadle's Avatar
    Join Date
    Oct 2007
    Location
    Valrico, Fl
    Posts
    5,108
    Threads
    1,419
    Thank You Posts
    Blog Entries
    11

    Default

    Attached Images Attached Images
     
    Nikon 600mm Lens at about 30' This image is F8

  4. #4
    Co-Founder James Shadle's Avatar
    Join Date
    Oct 2007
    Location
    Valrico, Fl
    Posts
    5,108
    Threads
    1,419
    Thank You Posts
    Blog Entries
    11

    Default

    Attached Images Attached Images
     
    Nikon 600mm Lens at about 30' This image is F11

  5. #5
    Co-Founder James Shadle's Avatar
    Join Date
    Oct 2007
    Location
    Valrico, Fl
    Posts
    5,108
    Threads
    1,419
    Thank You Posts
    Blog Entries
    11

    Default

    Attached Images Attached Images
     
    Nikon 600mm Lens at about 30' This image is F16

  6. #6
    Co-Founder James Shadle's Avatar
    Join Date
    Oct 2007
    Location
    Valrico, Fl
    Posts
    5,108
    Threads
    1,419
    Thank You Posts
    Blog Entries
    11

    Default

    Attached Images Attached Images
     
    Nikon 600mm Lens at about 30' This image is F22

  7. #7
    Co-Founder James Shadle's Avatar
    Join Date
    Oct 2007
    Location
    Valrico, Fl
    Posts
    5,108
    Threads
    1,419
    Thank You Posts
    Blog Entries
    11

    Default

    Attached Images Attached Images
     
    Here side by side, is a real world example.
    Do you want a smooth background or do you prefer a little more texture?

  8. #8
    Co-Founder James Shadle's Avatar
    Join Date
    Oct 2007
    Location
    Valrico, Fl
    Posts
    5,108
    Threads
    1,419
    Thank You Posts
    Blog Entries
    11

    Default

    Attached Images Attached Images
     
    Here they are side by side, all in 1 stop increments.

  9. #9
    Alfred Forns
    Guest

    Default

    Love the series James !!! Great examples !!!

  10. #10
    BPN Member Kerry Perkins's Avatar
    Join Date
    Nov 2008
    Location
    Simi Valley, California
    Posts
    8,310
    Threads
    1,048
    Thank You Posts

    Default

    This is excellent, thanks so much for posting! I am always looking for the f/4 setting on my 400mm lens, but it just isn't there. :( Maybe some day!! :) Thanks Captain.
    "It is an illusion that photos are made with the camera... they are made with the eye, heart, and head." - Henri Cartier Bresson

    Please visit me on the web at http://kerryperkinsphotography.com


  11. #11
    BPN Viewer
    Join Date
    May 2009
    Location
    Auranagabad ( MS ) India
    Posts
    12,833
    Threads
    766
    Thank You Posts

    Default

    Cant get better tutorial than this James
    TFS

  12. #12
    Lance Peters
    Guest

    Default

    Nice James!!!
    Thanks for taking the time to do this for us.
    :)

  13. #13
    Lifetime Member Jay Gould's Avatar
    Join Date
    Mar 2009
    Location
    In the whole wide world!
    Posts
    2,788
    Threads
    332
    Thank You Posts

    Default

    Cool series; you can see a change in the sharpness in the top of the piece of wood from aperture to aperture. Where was the actual focal point; in the center of the wood measured both ways?
    Cheers, Jay

    My Digital Art - "Nature Interpreted" - can now be view at http://www.luvntravlnphotography.com

    "Nature Interpreted" - Photography begins with your mind and eyes, and ends with an image representing your vision and your reality of the captured scene; photography exceeds the camera sensor's limitations. Capturing and Processing landscapes and seascapes allows me to express my vision and reality of Nature.

  14. #14
    BPN Viewer
    Join Date
    Sep 2009
    Location
    Greece Athens
    Posts
    1,303
    Threads
    385
    Thank You Posts

    Default

    great series , we can lern from those ... well done

  15. #15
    Forum Participant
    Join Date
    Mar 2009
    Location
    Bangkok, Thailand
    Posts
    1,353
    Threads
    90
    Thank You Posts

    Default

    Thank you for posting this, definitely help.

  16. #16
    BPN Viewer
    Join Date
    Jan 2008
    Location
    Bradenton, Florida
    Posts
    231
    Threads
    31
    Thank You Posts

    Default

    James:

    Great post.. That should be made a "sticky"..

    Dave

  17. #17
    BPN Viewer
    Join Date
    Oct 2009
    Location
    Clearwater, FL
    Posts
    183
    Threads
    2
    Thank You Posts

    Default

    Very well done, James. Your test shots also show the effects of diffraction. The limb is not near as sharp at f/16 and f/22 as f/8.

  18. #18
    Lifetime Member Doug Brown's Avatar
    Join Date
    Jan 2008
    Location
    Albuquerque, NM
    Posts
    11,879
    Threads
    917
    Thank You Posts

    Default

    Excellent stuff James!
    Upcoming Workshops: Bosque del Apache 2019, Ecuador 2020 (details coming soon)
    Website -
    Facebook - 500px

  19. #19
    Julie Kenward
    Guest

    Default

    If this doesn't help someone understand better why their background looks the way it does I don't think anything will. It just doesn't get any simpler than that!

  20. #20
    Xristos Zo
    Guest

    Default

    The side by side shots are very informative, thanks

  21. #21
    Publisher Arthur Morris's Avatar
    Join Date
    Dec 2007
    Location
    Indian Lake Estates, FL
    Posts
    32,557
    Threads
    1,438
    Thank You Posts

    Default

    Well done Frog-teacher :)
    BIRDS AS ART Blog: great info and lessons, lots of images with our legendary BAA educational Captions; we will not sell you junk. 30+ years of long lens experience/e-mail with gear questions.

    BIRDS AS ART Online Store: we will not sell you junk. 35 years of long lens experience. Please e-mail with gear questions.

    Check out the new SONY e-Guide and videos that I did with Patrick Sparkman here. Ten percent discount for BPN members,

    E-mail me at samandmayasgrandpa@att.net.










  22. #22
    BPN Viewer
    Join Date
    Aug 2010
    Location
    New Jersey
    Posts
    6,829
    Threads
    569
    Thank You Posts

    Default

    James, very useful and the examples making it self explanatory

  23. #23
    BPN Viewer
    Join Date
    Jan 2008
    Location
    Ottawa, Ontario, Canada
    Posts
    1,671
    Threads
    140
    Thank You Posts

    Default

    James, "seeing is believing". A lot of photographers could benefit from this visual tutorial.

    Thanks,

  24. #24
    Forum Participant
    Join Date
    Feb 2008
    Location
    Costa Rica
    Posts
    4,547
    Threads
    253
    Thank You Posts

    Default

    Thanks again for this lesson, much appreciated.

  25. #25
    BPN Viewer Dave Leroy's Avatar
    Join Date
    Nov 2008
    Location
    Delta, BC
    Posts
    3,789
    Threads
    380
    Thank You Posts

    Default

    I have been back to this to check things out a couple times.

    Tks James.

    Dave

  26. #26
    Akash Panchbudhe
    Guest

    Default best example for the beginers !!!

    thanks for such a great lesson.

    Sir, plz keep on posting such threats

    Rgds
    Akash

  27. #27
    Publisher Arthur Morris's Avatar
    Join Date
    Dec 2007
    Location
    Indian Lake Estates, FL
    Posts
    32,557
    Threads
    1,438
    Thank You Posts

    Default

    I am thinking that I like the smooth BKGRs :)
    BIRDS AS ART Blog: great info and lessons, lots of images with our legendary BAA educational Captions; we will not sell you junk. 30+ years of long lens experience/e-mail with gear questions.

    BIRDS AS ART Online Store: we will not sell you junk. 35 years of long lens experience. Please e-mail with gear questions.

    Check out the new SONY e-Guide and videos that I did with Patrick Sparkman here. Ten percent discount for BPN members,

    E-mail me at samandmayasgrandpa@att.net.










  28. #28
    BPN Viewer
    Join Date
    Jun 2008
    Location
    Vernon, N.J.
    Posts
    480
    Threads
    76
    Thank You Posts

    Default

    Great examples James. Thanks for the info.

  29. #29
    BPN Viewer
    Join Date
    Jul 2011
    Location
    Gokak, Karnataka state, India
    Posts
    5
    Thank You Posts

    Default Bokeh

    Bokeh and the sharpness of the subject at given aperture seems to differ with every lens. Your lesson on the 600mm is as informative as it can get. Thank you.

  30. #30
    Eric Weaver
    Guest

    Default

    Very nice examples of the effects. Wanted to add to the comments that it also depends on how far away the background is to the subject. At different background depths each f stop will give a different effect than the ones shown. Things like lighting, blade shape and configuration, lens quality also come into play. My Canon lenses gave a much different bokeh than my Leica or Schneider lenses do as will a Nikon lens. This gives a good general visual representation of how it works. A nice starting point for folks to consider.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Web Analytics