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turbo boosters and nikon lenses (bit question heavy)

Discussion in 'Open Discussion' started by newfie, Mar 14, 2015.

  1. newfie

    newfie Mu-43 Veteran

    211
    Jan 15, 2015
    Canada
    Ian
    I have an old 50mm 2.0 AI, a 60mm micro 2.8 G, 70-210 D, and F4 sigma 70-200 manual aperature as well as several DX lenses (a real mash-up).

    From what I understand, I need a G type adapter for aperture control on G lenses but will this still be ok for the AI lenses and how does this then apply to DX?

    Also, I'm wondering if gaining a stop will also increase the bokeh much or at all on the m43 sensor (for ex my 50mm 2.0 will become a 1.4 and the old sigma a 200mm 2.8)?
    Wow, sounds too good to be true. Any first hand experiences?
     
  2. gryphon1911

    gryphon1911 Mu-43 Hall of Famer

    Mar 13, 2014
    Central Ohio, USA
    Andrew
    The G adapter should work fine for the lenses with aperture rings. The G adapter gives you a built in iris so that you can make the G lenses work without electrical contacts. You would leave the adapter iris wide open, and then just control the aperture setting from the lens.

    The turbo booster will make the lenses appear more like they would on the sensor that they were designed for.
     
  3. newfie

    newfie Mu-43 Veteran

    211
    Jan 15, 2015
    Canada
    Ian
    interesting, is there an adapter for Nikon that maintains electronics for metering, af, d, g lenses?
     
  4. ManofKent

    ManofKent Hopefully still learning

    789
    Dec 26, 2014
    Faversham, Kent, UK
    Richard
    It's purely stop-down metering.
     
  5. newfie

    newfie Mu-43 Veteran

    211
    Jan 15, 2015
    Canada
    Ian
    Yikes, focus sounds tricky with those sorts of apertures in MF, especially in the med/longer focal ranges?
     
  6. ManofKent

    ManofKent Hopefully still learning

    789
    Dec 26, 2014
    Faversham, Kent, UK
    Richard
    Focus peaking on the GM1 helps. I'm pre-autofocus so used to it :blush:
     
  7. MAubrey

    MAubrey Photographer

    Jul 9, 2012
    Bellingham, WA
    Mike Aubrey
    You should also be aware that your 60mm f/2.8 Macro will go from being 1x magnification to being .71x magnification, since the focal reducer is reducing the image circle and in turn the magnification at a giving focusing distance.
     
  8. Jonathan F/2

    Jonathan F/2 Mu-43 Hall of Famer

    Aug 10, 2011
    Los Angeles, CA
    What body are you using? On my E-M10 and E-PM2 MF focus is a breeze. I also found sharp lenses tend to be easier to focus. I'm using a cheap generic focal reducer adapter on M43, and a Zhongyi Lens Turbo on my Fuji camera. If I could do it over again, I'd get the Lens Turbo for M43 as well. Though it doesn't have any way to adjust aperture on G lenses, so it's only good with Nikon lenses with aperture rings.

    Here are a couple samples with the Nikon 100mm 2.8 E to give you an idea of DOF. This lens is by far my favorite lens to use when using an FR adapter.

    street_la_023.

    street_la_020.

    TKF15631.
     
    • Like Like x 2
  9. newfie

    newfie Mu-43 Veteran

    211
    Jan 15, 2015
    Canada
    Ian
    Nice shots. Creamy background. I'm using an epm2. I'll check out the Lens Turbo and see if they make a G series. That would help.

     
  10. MAubrey

    MAubrey Photographer

    Jul 9, 2012
    Bellingham, WA
    Mike Aubrey
    One option would be to buy a Canon EF Lens Turbo (they don't have contacts), then you could easily pick up a G lens to EF adapter. That would solve the aperture problem.
     
    • Like Like x 1
  11. listers_nz

    listers_nz Mu-43 Veteran

    256
    Nov 22, 2013
    Christchurch, New Zealand
    Simon
    I'm not sure if this helps, but here goes. I have a couple of Nikon Series E lenses (which are AI-s) and two of the cheaper (i.e. ebay from China) Nikon mount speed boosters. They behave slightly differently, as follows:
    The "Zhongyi Lens Turbo AI-M43" has no controls as such, and the lens aperture changes as I move in the aperture ring.
    The other is labelled "N/G-m4/3" and it has a collar on the upper part of its body - twist it in one direction and the lens stays wide open regardless of the aperture ring, twist it in the other direction and the aperture ring changes the aperture.