@Adde

I'm well aware of different lenses and mounts and how it all works

??...apparently not ! Even 3rd party lenses that would offer a sufficiently large image circle with m43 mounts , like the rokinson's for instance would not be able to be speedboostered because using the m43 mount version makes these lenses from the lens element to the flange longer allowing no space for a speedbooster. For example, look at the specs for the robikon 14mm ef and m43 versions. The ef version is 3.8 " long while the m43 is 4.76" . That length difference is where the speedbooster would fit. So if you want to use a speedbooster , it's got to have sufficient space between the lens elements and the flange.

@Vitaliy_Kiselev

Thanks for the reply Vitaliy, and thanks for the link. But that's not really what I asked, I'm well aware of different lenses and mounts and how it all works. My question is simply: Is there a lens turbo that still gives me a M43 mount to mount my other adapters for such as Nikon to M43. As far as I can see, there is not lens turbo or speed booster that offers that.

Could anyone please help me out with understanding one thing...

I have a GH3, and would like to put on the lens turbo. Problem is that I have lenses with M4/3 mount, Nikon mount, and Konica. For these lenses I use different adapters to adapt them to my GH3 mount. Now, if I put on the lens turbo, can I get it with M43 mount so that all my adapters for my different lenses still work? As far as I can see the lens turbo has mounts for Nikon, Canon, and some other but not with a M43 mount.

I could imagine how awesome my Voigtlander 25 0.95 would be with the speedbooster!

@goanna

Huh, if you turn the optical block position of infinity point slightly changes.

However, any idea if the lens turbo might change the focus point? For example, in order to focus on infinity I need to dial back to 10m mark.

Check earlier posts in this topic. Adapter allow to tune slightly optic block so it'll be all good.

@anti12, thank you!!! I have ordered one (Nikon G with tripod mount), and am anxiously awaiting its arrival. :)

@anti12 Thank you so much for the samples! The Nikon RJ seems to be no option for using the M42 lenses on the bmpcc.

Looks a bit like the RJ for EF lenses should be taken into account.

@hilburger

it isn't able to focus infinity, just for macro shooting

From adapter description. Please carefully check the table I linked.

@Vitaly_Kiselev Great, that's a big help! So I would have no problems to use my M42 lenses on the RJ Lens Turbo Nikon>MFT(bmpcc) with such a simple adapter?

http://www.ebay.com/itm/M42-Lens-to-Nikon-Adapter-for-D7100-D7000-D5200-D5100-D3200-D3100-D80-D600-D800-/271176648346?pt=US_Lens_Adapters_Mounts_Tubes&hash=item3f2363469a

Or was the problem adopting M42 to the Nikon RJ the infinite focus? I am unsure at the moment, can't find the link right now.

Minolta MD is not properly adaptable to either M42, Nikon or Canon EF (only with Glas-Adapters that will ruin your image, and add some crop)

If you use Nikon/M42 usually, I'd stick with that route. You can adapt both to EF, but while M42 adapts nicely you can get wiggle-issues with Nikon, a lot. If not in the beginning, shortly after. More elegant. The Canon EF isn't worth it anyway, if you ask me. Dump it for a cheap Nikon 50mm f/1.8 or equivalent for the M42 mount, and have same quality at better handling (including aperture control that you won't have with any of these adapters) I bought the EF one so I can use "anything", but this was only a temporary solution. I actually wanted to get a better NIK-EF Adapter, but as the best ones (Novoflex) cost actually more than a second booster, I asked myself if it were that wise... :)

From my experience, the Sankor isn't fun in any combination, but I wish you good luck with that :)

no it simply engages the lens pin that would otherwise engage with the camera, so it's using the actual lens aperture blades