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Best m4/3 adapters for parfocal operations
  • monks19monks19

    Hi, I was wondering which lens adapters offered the best (or close to) parfocal adjustments for zoom lenses ? Parfocal zoom lenses are really hard to come by, but I know that some special adapters offers adjustments from the back focus/flange in order to get a very close parfocal use from the lens.

    So, which one correspond to this ? I have a RJ Nikon to mf3 adapter (an old version). But what else is out there and are they worthwhile ? What other change the RJ adapters offers now and is it worth the change ?

    Thanks to answer

  • 6 Replies sorted by
  • Vitaliy_KiselevVitaliy_Kiselev

    It is hard to understand what you mean.

    Zoom lens is parfocal by design. If you want to keep it working ok on shorter flange distance mount all you need is good precise adapter, preferable one that can use shims.

    No adapter will make lens parfocal by itself.

  • monks19monks19

    OK then. Because I know that by adjusting the flange/back focus, sometimes I can work with a varifocal lens like it was almost parfocal. That's why I was asking if there have bee any recent improvements on optics on adapters like the RJ or the Mikaton lens turbo. If any what are they exactly ?

    Incidently, I just found those video of lenses comparisons. What do you think ?

    Thanks to answer.

  • Vitaliy_KiselevVitaliy_Kiselev

    You tell very strange things.

    Adapter can't and will never make you parfocal lens.

    Videos are about infinity focus issue arising from adapter wrong parameters usually.

  • monks19monks19

    Hi, sorry, the videos weren't meant to be in the conversation. But about the adapters, any recent improvements/changes on them ? I got a RJ from vearly 4 to 5 years ago and I was wondering it was improved since then ?

  • Vitaliy_KiselevVitaliy_Kiselev

    RJ is almost same.

    Check http://www.personal-view.com/talks/discussion/6753/mitakon-lens-turbo-speed-booster-analog-available#Item_198 it is better

  • monks19monks19

    OK. BTW. Do you know any old/used parfocal lens (manual) ? I'm asking because the so called "Cine Lenses" or whatever their name is, are a bit too pricy fo me. Any Suggestions ? I thought of old lenses like this one (http://www.ebay.ca/itm/Navitar-18-180mm-f2-25-1-SAMPLES-Panasonic-GH2-3-4-Olympus-E-M5-BMPCC-1204-/222130603910?hash=item33b8040786:g:8JUAAOSwYudXG6hK), but I'm bot very sure about it, honestly. The fact that I'll be stuck using a rig/lens holder and also that the lens by itseld is more recommander for outdoor uses, it doesn't really help.

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