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Image shift while focusing with FF
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  • krotalkrotal

    @mo7ies : Pretty expensive solution, indeed ;) The Lanparte Baseplate + Varavon lens support will solve the problem (I hope so). @Greek_m43 : I'll keep you informed

  • mo7iesmo7ies

    I've seen people use a second FF opposite the main one, to counteract the torque force. Not sure if this is the best solution. I think the lens support with top tie-down may be better to prevent lens move while operated by FF.

  • Greek_m43Greek_m43

    @Krotal let me know how the lens support goes.

  • krotalkrotal

    @pinger007 : That's a very good news, I'll check it out :)

  • pinger007pinger007

    I purchased the varavon lens support from vitaliy's deals about a month ago and my lens shift problem has all but disappeared with my nikon glass.

  • krotalkrotal

    @Vitaliy_Kiselev : Sorry I didn't quite understand, you mean two point rod attachment (i.e front and rear clamps on Lanparte base ?). Anyway thanks for your help i'll purchase LPT baseplate and check out varavon lens support.

  • Vitaliy_KiselevVitaliy_Kiselev

    @krotal

    I specially advised two point camera bases. One point can act weird. And yes, you need good adapter, good camera base and good lens support.

    Btw, Varavon lens support is one of the good ones.

  • krotalkrotal

    In fact it's the whole camera that's moving up and down on the baseplate... Don't know what to do, maybe the lanparte baseplate will solve this problem but i'm not sure.

  • ChainsawFilmsChainsawFilms

    Even with a good mount you'll get play with an adapter. You may want to check out the Arri LS-10 which allows you to tie the lens down to stop shift. Expensive though.

    The Zacuto Z-Mount II looks like it does the same kind of thing.

  • Vitaliy_KiselevVitaliy_Kiselev

    @krotal

    I recommend Lanparte, it is present in our deals.

    On ebay you can find other camera mounts

    http://www.ebay.com/itm/Quick-Release-Plate-2-x-40cm-15mm-Rail-Rod-Support-fr-DSLR-Canon-5D-Mark-II-7D-/251044581286

    http://www.ebay.com/itm/DSLR-15mm-Rail-Rod-Support-System-w-QR-Quick-Rlease-Plate-for-5D-Mark-II-III-7D-/330739001529

  • krotalkrotal

    Sure, but i use a Novoflex nikon/mft adapter, this one's pretty stiff so I don't believe it may cause any play. The main problem may come from my rubber adjustable gears, i'd better pick up some cinematics or similar gears. For now I use a simple trick : apply a little bit of torque to the FF before recording so that the lens moves, once the lens is stable, start recording and focusing without releasing torque.

    @Vitaliy_Kiselev : Although my gini plate seems to be good, can you recommend some other good baseplates ?

  • RRRRRRRR

    Another thing that plays into the equation is the quality of the adapter... play - > image shifting.

  • krotalkrotal

    After a bit more testing, I managed to minimize this issue by enlarging the lens gear diameter, reducing the torque applied to the lens. Smooth rack de/focus becomes possible but fast focusing causes way too much shifting.I'll post some video samples , but anyway, focusing with FF needs pratice I guess ;)

  • Vitaliy_KiselevVitaliy_Kiselev

    @krotal

    I suggest good camera base, good rods and lens support.
    Plus do not overtighten FF.

    I also suggest to post some short video sample.

  • nomadnomad

    This is a well known issue with still lenses – one of the reasons why true cine glass is pretty expensive. Try to adjust the FF to apply the least torque possible without slipping.

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