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  1. #1
    Panarus biarmicus Moderator (Sports) SmartWombat's Avatar
    Join Date
    Mar 2004
    Location
    UK
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    11,750

    Canon lens MF and follow focus

    Has anyone looked into a follow focus rig for the electronic focus lenses?
    Once you twist the lens focus ring past infinity or minimum distance, the direct relationship between focus ring position and actual focus is lost. So to work the FF control has to have end stops on the action.
    Not only that, but if the relationship between focus ring and MF position is not linear then you can't accurately focus from the follow focus knob at all.
    Anyone actually tried it?

    These are frames from Canon DSLR video, where AF hasn't got a hope.
    So I need accurate MF.
    Canon lens MF and follow focus-a95u4244-2.jpgCanon lens MF and follow focus-a95u4244.jpgCanon lens MF and follow focus-a95u4244-3.jpgCanon lens MF and follow focus-a95u4244-4.jpgCanon lens MF and follow focus-a95u4243-2.jpgCanon lens MF and follow focus-a95u4243-3.jpgCanon lens MF and follow focus-a95u4243-4.jpgCanon lens MF and follow focus-a95u4243-5.jpgCanon lens MF and follow focus-a95u4243.jpg
    PAul

    Scroll down to the Sports Forum and post your sports pictures !

  2. #2
    Moderator Skyman's Avatar
    Join Date
    Feb 2004
    Location
    Sydney, New South Wales, Australia
    Posts
    1,505

    Re: Canon lens MF and follow focus

    slipping is probably your biggest worry and as far as I can tell there really isn't a way around it. I would try a focus puller rig like this one: Follow FocusShifter - Lens Mounted Follow Focus for DSLR Video and Photography -
    These will let you set stopping points and marks so that you can pre set the focus for certain distances which means you can have some control around the intermediate focus points. you always run the risk of slipping if you are moving too fast, I think the idea is to pre focus on the spots you need. this will give you a higher level of accuracy between points.
    Quidquid latine dictum sit, altum videtur


  3. #3
    Junior Member
    Join Date
    Jul 2014
    Posts
    11

    Re: Canon lens MF and follow focus

    Recently I purchased Follow Focus....I love it...Very fast setup....


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