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Wanted....Split image focusing screen for my m4/3 cameras.

Discussion in 'Open Discussion' started by Dave in Wales, Jul 17, 2012.

  1. Dave in Wales

    Dave in Wales Mu-43 All-Pro

    Nov 5, 2011
    West Wales
    Now wouldn't that be nice, a beautiful circular, diagonal split image, focusing screen.
    With or without microprism, it's your choice.

    When manual focusing I can't seem to get on with magnifying the center section, especially when hand held.
    As I press the button I'm never sure if it's in focus or not or if the framing is as intended.

    Even with a tripod I find I'm turing the ring going back-and-forth-back-and-forth-back-and-forth.

    I can't recall having such manual focusing problems with my Nikons of old with their beautiful split images.

    Even the Nikons of today have left and right arrows and a green dot that lights up when focus is achieved.

    Why is m4/3 lacking in this respect......OR is it me, I have a E-M5 and a GH2.

    Anyone else have MF problems, I find it worse when doing close-up/macro shots.

    MF without an indicator, green dot, or snap-in/snap-out is very subjective I find.

    Suggestions welcome.
     
    • Like Like x 1
  2. Sammyboy

    Sammyboy m43 Pro

    Oct 26, 2010
    Steeler Country
    If you have Fn1 set to digital-teleconverter, it's a piece of cake. Just toggle the Fn1 button to get 2x magnification, without taking your eye from the viewfinder.
     
  3. Ned

    Ned Mu-43 Legend

    Jul 18, 2010
    Alberta, Canada
    Are you using the EVF? That really makes a big difference.

    What magnification level are you using? By the sound of your description, it sounds to me like you're using an Olympus camera with Manual Focus Assist on a native (4/3 or m4/3) lens? If I'm correct in that assumption, then you can change the magnification level by entering the Magnifier tool and pressing INFO. That magnification will be saved for when you use MF Assist with a native lens as well. It sounds like you could be magnifying in too close and losing track of things.

    *EDIT: Just realized you said you have the E-M5 and GH2... So that info will apply to the E-M5.

    The closest thing to a split image you'll find in a digital non-reflex system would be focus peaking. Unfortunately, that hasn't made its way into any Micro Four-Thirds bodies yet.
     
  4. pheaukus

    pheaukus Mu-43 Regular

    178
    Jun 22, 2012
    Alternatively, magnification can be changed by turning the menu wheel (at least on PEN PL3), even within Manual Focus Assist.

    m43 cameras focus based on contrast. I wonder if a camera can notice 'how far' it is out of focus based on contrast alone. It works very differently for optical split screen of SLR and phase detect AF of DSLR.
     
  5. troll

    troll Mu-43 Veteran

    224
    Jan 25, 2012
    Imho peaking is more useful and easier to implement. But since those greedy bastards from Olympus and Panasonic really want you to buy only native lenses it's unlikely that there'll be any improvements in manual focus department anytime soon.
     
  6. I don't know how this would work, unless it compared the level of contrast against some kind of threshold value which I assume (???) is how focus peaking works. This wouldn't guarantee total accuracy in a high contrast scene nor give any indication of focus whatsoever in a low contrast scene.
     
  7. Dave in Wales

    Dave in Wales Mu-43 All-Pro

    Nov 5, 2011
    West Wales
    Many thanks for the info guys, yes, my magnification is to high.

    If you have Fn1 set to digital-teleconverter, it's a piece of cake. Just toggle the Fn1 button to get 2x magnification, without taking your eye from the viewfinder.

    Thanks Sammy, I tried that but it takes the picture at 2x magnification as well, MF Assist does not.
     
  8. mattia

    mattia Mu-43 Hall of Famer

    May 3, 2012
    The Netherlands
    Hence 'toggle'. Turn it on, focus, turn it off, expose.
     
  9. Dave in Wales

    Dave in Wales Mu-43 All-Pro

    Nov 5, 2011
    West Wales
    Do you honestly expect it to stay in focus when 'toggled' to off.

    Hand held no-way, tripod I even have my doubts.
     
  10. s0nus

    s0nus Mu-43 Veteran

    424
    Dec 13, 2010
    Chicago
    Unless you're close focusing using really large apertures, then yes.
     
  11. Sammyboy

    Sammyboy m43 Pro

    Oct 26, 2010
    Steeler Country
    Works fine for me.
     
  12. slothead

    slothead Mu-43 All-Pro

    Aug 14, 2012
    Frederick, MD
    Personally I think F1 is too hard to get to quickly and I have F2 programmed for toggling between AF and MF. Maybe I'll assign F1 to AF/MF and assign F2 to dig. zoom.