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  1. #71
    Senior Member
    cbay's Avatar

    Re: Back-Button Focus

    Quote Originally Posted by siamthai1 View Post
    I often accidentally switch to Live view, cos the AE-L/AF-Lbuttons of the D7000 are very close to the live View switch. . I gave it a try today. I love BBF, but I think I have to exercising more. If I do a cam upgrade sooner or later, I hope the the button is better placed.
    Michael, was the same for me as well but now it's not a problem after more use. The 7200 has the AE-L/AF button in the same area, but the live view is at the bottom of the camera.


    › See More: Back-Button Focus
    Thanks/Like Michael J. Thanks/liked this post
     
    ​Chris


    Nikon D7000, D7200, Nikon 18-140, Tamron 150-600, Tokina 11-20


    https://www.flickr.com/photos/130798075@N03/

    https://500px.com/christopherwbay



  2. #72
    Junior Member

    Re: Back-Button Focus

    Thanks as well on your warm welcome. I've been learning so much from you.
    Love Nikonites community!!!

  3. #73
    Senior Member

    Re: Back-Button Focus

    Quote Originally Posted by Horoscope Fish View Post
    I use BBF for everything,
    ....
    Pardon me for my ignorance but please let me know how can I effectively use it for moving train images on my D3300? If I lift my thumb from the AF-assigned key to change the single focus point to some other, will the focus point that was locked by previous pressing of the key , change?
    Also does zooming i=out while shooting continuously with thumb pressed on assigned key, changes the focus point.
    Sometime we face problem of mis-focussed engine nose.
    Thanks in advance.

  4. #74
    Senior Member
    adityasoman's Avatar

    Re: Back-Button Focus

    Quote Originally Posted by Lalam View Post
    Pardon me for my ignorance but please let me know how can I effectively use it for moving train images on my D3300? If I lift my thumb from the AF-assigned key to change the single focus point to some other, will the focus point that was locked by previous pressing of the key , change?
    Also does zooming i=out while shooting continuously with thumb pressed on assigned key, changes the focus point.
    Sometime we face problem of mis-focussed engine nose.
    Thanks in advance.

    Use AF-C and keep the desired focus point on the nose of the engine at all time.While doing this keep the backbutton(AE/AF-L) pressed so that it keeps on refocusing and keeps the area in focus at all times.The moment you let go off the rear button it will stop refocusing and as a result things will appear out of focus !!
    Sent from my GT-I9070 using Tapatalk 2
    Last edited by adityasoman; 05-24-2015 at 08:32 PM.
    D5200 , 18-55mm f/3.5-5.6G VR II , DX 35mm f/1.8G , 55-200 f/4-5.6 VR II , Tamron 150-600 G2 , Hoya CIR-PL , Hoya ND8 , Hoya ND400 , Polaroid Close Up Filter Set

  5. #75
    Senior Member
    Horoscope Fish's Avatar

    Re: Back-Button Focus

    Quote Originally Posted by Lalam View Post
    Pardon me for my ignorance but please let me know how can I effectively use it for moving train images on my D3300? If I lift my thumb from the AF-assigned key to change the single focus point to some other, will the focus point that was locked by previous pressing of the key , change?
    Also does zooming i=out while shooting continuously with thumb pressed on assigned key, changes the focus point.
    Sometime we face problem of mis-focussed engine nose.
    Sure, just keep reading...


    Quote Originally Posted by adityasoman View Post
    Use AF-C and keep the desired focus point on the nose of the engine at all time.While doing this keep the backbutton(AE/AF-L) pressed so that it keeps on refocusing and keeps the area in focus at all times.The moment you let go off the rear button it will stop refocusing and as a result things will appear out of focus !!
    Sent from my GT-I9070 using Tapatalk 2
    And there's your answer...
    .....
    ~ Paul
    ....
    ....
    Primary Kit :: D850, Tamron 70-200mm f/2.8 G2, Tamron 24-70mm f/2.8 G2, Sigma 135mm f/1.8 Art, Sigma 50mm f/1.4 Art,
    Godox Flashes & Triggers, Manfrotto X055PROB, 3-Legged Thing Airhed II... All Stuffed into a Manfrotto Pro Backpack 50
    ....
    ....
    ● ▬▬▬▬▬▬▬ ๑۩۩๑ ▬▬▬▬▬▬▬ ●

  6. #76
    Senior Member

    Re: Back-Button Focus

    Quote Originally Posted by adityasoman View Post
    Use AF-C and keep the desired focus point on the nose of the engine at all time.While doing this keep the backbutton(AE/AF-L) pressed so that it keeps on refocusing and keeps the area in focus at all times.The moment you let go off the rear button it will stop refocusing and as a result things will appear out of focus !!
    Quote Originally Posted by Horoscope Fish View Post

    And there's your answer...
    .....
    Thanks. I was tempted to use BBF from long. Now I will try it definitely.

  7. #77
    Senior Member
    mikew's Avatar

    Re: Back-Button Focus

    Quote Originally Posted by Lalam View Post
    Pardon me for my ignorance but please let me know how can I effectively use it for moving train images on my D3300? If I lift my thumb from the AF-assigned key to change the single focus point to some other, will the focus point that was locked by previous pressing of the key , change?
    Also does zooming i=out while shooting continuously with thumb pressed on assigned key, changes the focus point.
    Sometime we face problem of mis-focussed engine nose.
    Thanks in advance.
    No idea how it would work on your camera but on my D7100 using BBF allows you to take pictures when the subject is not in focus,setting focus priority does not change this,with BBF my camera ignores my focus priority setting,so dont get carried away with high speed shooting
    Thanks/Like nuri56 Thanks/liked this post
     
    Mike

    https://www.flickr.com/photos/7239177@N07/

    Olympus EM1MK11,Panasonic G80, 12-60mm, 60mm macro, Leica 100-400mm

    Nikon 1 V2,FT-1,10-30mm 30-110mm Viltrox extension tubes










  8. #78
    Senior Member

    Re: Back-Button Focus

    I believe that the d3300 can not be set up for release priority at all. (my d3100 can not) This limits the full effect affect of the bbf technique. That is, the d3300 will not allow focus and recompose with bbf. He loses the pseudo af-s mode one gets by releasing the bb and pointing camera to a new subject. Holding down the bb activates continuous focus as it should. Releasing the bb stops focus stops focus as it should, however the camera may not fire since it no longer sees focus as it has no release priority mode.
    He still may gain some convenience tracking the trains using the back button with single point as described in post #74.

    Another idea... He can trap focus on the train. Prefocus with bb where he expects the train. release bb. hold shutter down. Hopefully nothing is in focus and his shutter will not fire. Keep holding shutter, train arrives and nose of train satisfies focus sensor when it hits the proper location and shutter will release.
    Found this on a quick google:
    How to use trap focus to get better sports and wildlife shots - Digital Photo Secrets
    Thanks/Like Lalam Thanks/liked this post
     
    I must have a really good camera.

  9. #79
    Senior Member
    adityasoman's Avatar

    Re: Back-Button Focus

    Quote Originally Posted by mikew View Post
    No idea how it would work on your camera but on my D7100 using BBF allows you to take pictures when the subject is not in focus,setting focus priority does not change this,with BBF my camera ignores my focus priority setting,so dont get carried away with high speed shooting
    Same with my D5200.Took me a time to figure out !!

    Sent from my GT-I9070 using Tapatalk 2
    Thanks/Like mikew Thanks/liked this post
     
    D5200 , 18-55mm f/3.5-5.6G VR II , DX 35mm f/1.8G , 55-200 f/4-5.6 VR II , Tamron 150-600 G2 , Hoya CIR-PL , Hoya ND8 , Hoya ND400 , Polaroid Close Up Filter Set

  10. #80
    Senior Member
    adityasoman's Avatar

    Re: Back-Button Focus

    Quote Originally Posted by nickt View Post
    I believe that the d3300 can not be set up for release priority at all. (my d3100 can not) This limits the full effect affect of the bbf technique. That is, the d3300 will not allow focus and recompose with bbf. He loses the pseudo af-s mode one gets by releasing the bb and pointing camera to a new subject. Holding down the bb activates continuous focus as it should. Releasing the bb stops focus stops focus as it should, however the camera may not fire since it no longer sees focus as it has no release priority mode.
    He still may gain some convenience tracking the trains using the back button with single point as described in post #74.

    Another idea... He can trap focus on the train. Prefocus with bb where he expects the train. release bb. hold shutter down. Hopefully nothing is in focus and his shutter will not fire. Keep holding shutter, train arrives and nose of train satisfies focus sensor when it hits the proper location and shutter will release.
    Found this on a quick google:
    How to use trap focus to get better sports and wildlife shots - Digital Photo Secrets
    Trap focus is a fantastic suggestion for this particular shot !!

    Sent from my GT-I9070 using Tapatalk 2
    Thanks/Like nickt Thanks/liked this post
     
    D5200 , 18-55mm f/3.5-5.6G VR II , DX 35mm f/1.8G , 55-200 f/4-5.6 VR II , Tamron 150-600 G2 , Hoya CIR-PL , Hoya ND8 , Hoya ND400 , Polaroid Close Up Filter Set





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