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RJ Lens Turbo m43 adapters
  • 782 Replies sorted by
  • monks19monks19

    Ok, but which ones comes from Japan, then ?

  • nomadnomad

    All of them are from China, even Metabones…

  • Vitaliy_KiselevVitaliy_Kiselev

    There's a reason metabones adapters cost what they do, and RJ adapters cost what they do.

    It is also not optical design, it is internal coating and lens coatings.

    As I know for now only some latest Mitakon lenses have top level coating in China.

    Japanese companies have huge advantage in this element, as they had 70 years of constant development and improvements. With their latest nano coatings (usually on outside big element) being outstanding.

  • joetheprojoethepro
    It is not issues. It is specific design made for specific cost.

    Exactly. There's a reason metabones adapters cost what they do, and RJ adapters cost what they do.

  • Vitaliy_KiselevVitaliy_Kiselev

    @monks19

    http://www.personal-view.com/talks/discussion/6753/mitakon-lens-turbo-speed-booster-analog-available#Item_193

    We'll have it on deals as all Mitakon lenses

  • monks19monks19

    Is it possible to have a link for this lens turbo v2 ?

  • brudneybrudney

    DZA - both RJ and Lens Turbo v1 are very similar in that they both suffer from the issue. Lens Turbo v2, which was released recently, seems to have a much better design and finally solves the dot issue. I'm pretty sure all RJ adapters have this problem, it's just people use different lenses in various lighting conditions and therefore it may not be so apparent to some, but it's always there. When I owned it, I used it ONLY when I needed an extra stop and never in full daylight, otherwise it would ruin my shots. For that it was OK, but sadly it was never good enough to be a substitute for a simple m4/3 adapter. Eventually I sold because I figured it was not worth the money and due to the dot issue I used it scarcely.

  • DZADZA

    When I bought it, I was expect a chinese product with some refraction problem, maybe not so sturdy. To me, this is sound correct, for that cost. I knew about blue dot as a problem that appear "just in some occasion". And I asked for a comparison with the Zhongyi, about which someone told me that the two products were virtually identical. Today, through other buyers present here, I find that one suffers from the problem and the other not. So yes, I'm a little angry. An I'm talking about it because it's full of people that don't know that question as it is for true. Hope everyone here have more point to decide about it :)

    I finish the crusade with a picture, this seem right.

    Schermata 3.png
    1280 x 800 - 2M
  • Vitaliy_KiselevVitaliy_Kiselev

    What do you mean ?

    I mean that I told.

    BTW, has any suggestion been made for stops markings on the apperture wheel ? It'll be quite helpfull, if possible.

    You mean adapter that can change lens lever position?

  • monks19monks19

    "It is not issues. It is specific design made for specific cost."

    What do you mean ?

    BTW, has any suggestion been made for stops markings on the apperture wheel ? It'll be quite helpfull, if possible.

  • Vitaliy_KiselevVitaliy_Kiselev

    Does RJ even care about thos issues ?

    It is not issues. It is specific design made for specific cost.

    It'll be cool to see much improved version.

    Some people just turn it into crusade.

  • monks19monks19

    Does RJ even care about thos issues ? I mean, how log it has been debated ?

  • Vitaliy_KiselevVitaliy_Kiselev

    @DZA

    It is time to end your crusade :-)

  • joetheprojoethepro

    @DZA This is a documented issue. You knew it going into the purchase. Why are you surprised, and angry?

  • DZADZA

    Well, after a long talk with RJ about my problems with the adapter, he offered me a partial (honestly, very generous) refund. However, I ask for give back the product for a complete refund. After that, RJ has still decided independently to refund the amount proposed by him, telling me that he would do tests to help me to solve my problem. This was 3 days ago. I'm still waiting. Well, I'm lucky, he is very kind and generous, as I said, but I'm not happy at all. This product sucks man. It suffers of terrible blue dot. Somethings change after 2 or 3 adjustment (I bought an hoods, I made a DIY hoods, I tried to use ND filters, and I also tried to unscrew the optical bench), but it's really hard to predict dangerous light situations. I'm making a lot of tests, and when I'm sure to get wonderful shots, in my computer those seems horrible and purple. The infinity adjustment is poor (the optical bench wobble if I try to unscrew it to reach infinity).

  • DZADZA

    @ monks19 try to screw also the frontal lens of the adapter, and always measure the dof and infinity at wide open iris.

  • monks19monks19

    Hi people. Quick question, is it normal that I can't reach infinity on my lens (even after several flange adjustments) with this speedboster ? My cam is a GH2 and my lens a Sigma 28-70mm f2.8 (Nikon mount) ?

    Thanks to answer

  • DZADZA

    Well, I tried to screw just a little bit more the lens elements in clockwise sense and it solve the problem 20%...then, I bought a PVC tube, and build some kind of plastic hood, just much more narrower than normal hoods...and it's a very good solution. I'm not saying that ALL problems hare disappeared, but it's a greath step forward. Anyway: for everyone here that think to buy a RJ LT: don't do that. Tray to modify iris aperture of your lens, to get a stepless iris ring, then buy some ZY adapter. As ThomNircovic says.

  • DZADZA

    Of course, it's a cheap product, and it's fine.

  • apefosapefos

    I think we cannot expect metabones quality in a low price product, but it is usable, at least in the GH2 1080p I like it, I did not try in 4k. It also minimizes the purple fringing and softness from manual focus lenses wide open.

  • DZADZA

    Well, after some try, i found a way to cut off some flares. It doesn't solve the problem 100%, but it help. I rotate the frontal lens of the adapter to his limit in clockwise direction. After that, many reflections hare disappeared. I still have infinity.

  • ThomNircovicThomNircovic

    my experience with RJ lens turbo and then ZY lens turbo : http://www.personal-view.com/talks/discussion/6753/mitakon-lens-turbo-speed-booster-analog-available/p8

  • DZADZA

    It happen evreytime at every aperture. The point is: at f2,8 (on the 35mm FD) to approx f3,5 is not clear, is just a blue shadows, extremely faded and in some case not so visibile. But there is. Over f3,5 is more clear and rounded. This is for everyone here: with iris wide open, make some middle-exposed frames. Then try to cover the lens with the hand like an hood, till you finger hare immediatly out of the frame. You will see the entire picture color change from purple dominant to natural color. The blue spot Is evreytime present, just invisible in most of the occasion.

  • soulkeepersoulkeeper

    good to know @apefos

    can anyone who has the blue spot problem,confirm that it only happens at f8 and bigger and not at f1.2 to f5.6 range?

  • apefosapefos

    I think it is not bad. I have it and I like it. The sharpness is good corner to corner and the blue dot just start to show up after f8 to f22, in fstops from 1.2 to 5.6 I cannot see it. The lens flare increases with the adapter but this is expected because there are more glass in the way, but the flares follows the main lens flares when you move the camera, so no problem at all. The adapter lenses are coated so the increase in flares are not so much pronounced. It is good value for what it does.

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