AF lock (AF stop) on E-M5II?

Discussion in 'Olympus Cameras' started by bogdanvalentin, Feb 17, 2017.

  1. bogdanvalentin

    bogdanvalentin Mu-43 Regular

    30
    Aug 19, 2016
    Bogdan
    Hello,
    Does anyone have the solution to do that?

    Half press the shutter button to obtain autofocus, then use a dedicated button to lock that focus, release the shutter button, and next time it's pressed fully so it won't autofocus again.

    I've read about of a method that works like this:
    - keep camera on MF
    - use a button to trigger AF
    - keep that button pressed and press shutter half to AF
    - release that button, focus in locked, camera back to MF
    Not really friendly method.

    There is an AF Stop option to be assigned to buttons, but is only available for L-Fn (Lens button, not an option for my lenses)
     
  2. comment23

    comment23 Mu-43 Regular Subscribing Member

    191
    Aug 26, 2016
    Hampshire, UK
    Simon
    Back button focus might be a solution, it can be set up to work like this:
    1. keep camera on MF
    2. press a button to trigger AF and release (focus is 'locked')
    3. shoot until you want to change focus
    4. repeat steps 2-3 as desired

    If that's what you're after I, or others on the forum, can help you set it up.

    Is that what you want? What camera model are you using?
     
  3. bogdanvalentin

    bogdanvalentin Mu-43 Regular

    30
    Aug 19, 2016
    Bogdan
    E-m5ii. managed to do that once.
     
  4. comment23

    comment23 Mu-43 Regular Subscribing Member

    191
    Aug 26, 2016
    Hampshire, UK
    Simon
    Ok, go to Menu => Gear A => AEL/AFL and set MF to mode 3 (be sure to confirm the setting by pressing 'OK' afterwards).

    You will also need to set a Fn button to AEL/AFL (Fn1 is set to this function by default).

    Then make sure you are in MF and use your chosen Fn button in combination with the shutter button as described above.
     
  5. bogdanvalentin

    bogdanvalentin Mu-43 Regular

    30
    Aug 19, 2016
    Bogdan
    Thanks!
    But in this case, is there a way for me to lock exposure as well?
     
  6. comment23

    comment23 Mu-43 Regular Subscribing Member

    191
    Aug 26, 2016
    Hampshire, UK
    Simon
    Technically, you can still do a half press of the shutter button for that. Although you may find that is not a friendly method either.
     
  7. bogdanvalentin

    bogdanvalentin Mu-43 Regular

    30
    Aug 19, 2016
    Bogdan
    Yeah, saw that.. I want to lock them both with buttons and half shutter to do nothing..

    What I did was left FN1 - AEL/AFL and on FN2 (which by default is multi-function, and almost never used) I set MF.
    So, the drill is like this: Leave camera on S-AF+MF (as it is 99% of the time), and when needed, 1st press FN2 to switch to MF, then FN1 to back button AF, then shoot.

    @comment23@comment23, thank you for your assistance!
     
  8. comment23

    comment23 Mu-43 Regular Subscribing Member

    191
    Aug 26, 2016
    Hampshire, UK
    Simon
    No worries. It's a pain and I always thought Olympus's use of the term "AFL" was stretching things a bit!
     
  9. TheMenWhoDrawSheeps

    TheMenWhoDrawSheeps Mu-43 Veteran

    394
    Jun 15, 2016
    is there any advantage over normal backbutton focusing? should be doable if i´m not mistaken.
    assign SF-S to backbutton, and clear the half press focusing.
     
  10. mjw

    mjw Mu-43 Veteran

    255
    Sep 23, 2013
    Seattle, WA
    Matt
    I'm not aware of any Olympus camera that allows that other than what was described above.
     
  11. TheMenWhoDrawSheeps

    TheMenWhoDrawSheeps Mu-43 Veteran

    394
    Jun 15, 2016
    menu/Options/gearA/"AEL/AFL"->S-AF->Mode3
    Halfway:AEL
    Fully: Expusure
    AEL/AFL:S-AF

    Shooting M i don´t really need AEL
     
    Last edited: Feb 17, 2017
  12. comment23

    comment23 Mu-43 Regular Subscribing Member

    191
    Aug 26, 2016
    Hampshire, UK
    Simon
    I think the OP wanted focus lock and exposure lock on 2 separate buttons independent of the shutter release button.
     
    • Agree Agree x 1
  13. mjw

    mjw Mu-43 Veteran

    255
    Sep 23, 2013
    Seattle, WA
    Matt
    Yeah, but the question was "how do I get back button focus and AEL at the same time?"
     
  14. bogdanvalentin

    bogdanvalentin Mu-43 Regular

    30
    Aug 19, 2016
    Bogdan
    @mjw@mjw that would be a good option too.. getting both on the same button and shutter to be independent
     
  15. Clint

    Clint Mu-43 All-Pro Subscribing Member

    Apr 22, 2013
    San Diego area, CA
    Clint
    I don't know why you would say Olympus was stretching things a bit, there are four options to move focus start and focus lock to something other than the shutter button.
     
  16. Clint

    Clint Mu-43 All-Pro Subscribing Member

    Apr 22, 2013
    San Diego area, CA
    Clint
    What is the benefit of decoupling both auto focus and exposure from the shutter button?
     
  17. bogdanvalentin

    bogdanvalentin Mu-43 Regular

    30
    Aug 19, 2016
    Bogdan
    Setting them both more carefully when shooting on a tripod, and not worry about them changing if you take the shot 5 minutes later.
     
    Last edited: Feb 18, 2017