Metabones Speed Booster
/forum/topic/1181879/47

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FerBatista
Registered: Dec 22, 2003
Total Posts: 367
Country: Portugal

Seeing how well the speedbooster is doing, I wonder why they don't make one of these with AF.
Something like the Nikon 1,6x TC or the Pentax 1,7x, but with the SB ratio.

Of course we wouldn't get full range AF, but it would still be extremely useful. I used the Nikon a few years ago and it worked quite well. The user puts the focus more or less where it needs to be and the adapter does the rest, it was actually very effective.

What do you guys think? Would you buy such a thing?



mirkoc
Registered: Jan 26, 2008
Total Posts: 628
Country: Croatia

How about a speedbooster from MF to full frame and then ordinary speedbooster. We could have F1 lenses from let's say 80f2 lens?



michael49
Registered: Jun 09, 2006
Total Posts: 5416
Country: United States

Speedbooster question:

I am considering one of these for my fuji xe1 - ideally I'd like to have eos mount so I could use a few canon lenses in addition to c/y lenses with adapter but one isn't yet available.

So.....


Do I get....

1. C/y mount and just use my C/y lenses?
2. Get nikon mount for use with some old nikkors? Could I use an adapter on my c/y glass to use with the nikkor speedbooster (c/y to G mount)?



artur5
Registered: Oct 09, 2005
Total Posts: 461
Country: Andorra

michael49 wrote:
Speedbooster question:

I am considering one of these for my fuji xe1 - ideally I'd like to have eos mount so I could use a few canon lenses in addition to c/y lenses with adapter but one isn't yet available.

So.....


Do I get....

1. C/y mount and just use my C/y lenses?
2. Get nikon mount for use with some old nikkors? Could I use an adapter on my c/y glass to use with the nikkor speedbooster (c/y to G mount)?


No adapter for Contax glass on Nikon bodies. Alternatively, you can get your Contax lenses 'leitaxed' to Nikon. ( only if they're MM )



michael49
Registered: Jun 09, 2006
Total Posts: 5416
Country: United States

artur5 wrote:
....
No adapter for Contax glass on Nikon bodies. Alternatively, you can get your Contax lenses 'leitaxed' to Nikon. ( only if they're MM )


Are you sure that's the case even if its being used on mirrorless camera and not on a Nikon body?

Why wouldn't this work?....

http://www.ebay.com/itm/NO-Glass-Contax-Yashica-C-Y-Lens-To-Nikon-Adapteer-/370444056225?pt=US_Lens_Adapters_Mounts_Tubes&hash=item56402fb6a1



Taylor Sherman
Registered: Mar 26, 2012
Total Posts: 1141
Country: United States

michael49 wrote:
artur5 wrote:
....
No adapter for Contax glass on Nikon bodies. Alternatively, you can get your Contax lenses 'leitaxed' to Nikon. ( only if they're MM )


Are you sure that's the case even if its being used on mirrorless camera and not on a Nikon body?

Why wouldn't this work?....

http://www.ebay.com/itm/NO-Glass-Contax-Yashica-C-Y-Lens-To-Nikon-Adapteer-/370444056225?pt=US_Lens_Adapters_Mounts_Tubes&hash=item56402fb6a1


You'd have to find some Nikon-to-Nex (or whatever mirrorless) adapter that had exactly the right number of millimeters removed to make up for the fact that this one is too thick. Which nobody makes, because why would they?




artur5
Registered: Oct 09, 2005
Total Posts: 461
Country: Andorra

michael49 wrote:
artur5 wrote:
....
No adapter for Contax glass on Nikon bodies. Alternatively, you can get your Contax lenses 'leitaxed' to Nikon. ( only if they're MM )


Are you sure that's the case even if its being used on mirrorless camera and not on a Nikon body?

Why wouldn't this work?....

http://www.ebay.com/itm/NO-Glass-Contax-Yashica-C-Y-Lens-To-Nikon-Adapteer-/370444056225?pt=US_Lens_Adapters_Mounts_Tubes&hash=item56402fb6a1


When you fit a Nikon mount Metabones SB on a NEX body you're converting the camera in a Nikon body, so to speak. Those C/Y lens to Nikon adapters do exist but, as Taylor says, they won't allow for infinity focus. This is clearly stated in the text to that eBay auction



michael49
Registered: Jun 09, 2006
Total Posts: 5416
Country: United States

I see - I realized that was the case with a slr, just didn't know if that would apply to a mirrorless body as well, thanks for the info.



H.Lux
Registered: Nov 21, 2010
Total Posts: 419
Country: Germany

I have an early speed booster ef to NEX. I use it with another adapter OM to EF to use the Oly 21/2. Problem is: Sometimes the NEX-7 won't release. The zoom function for manual focusing doesn't work either. When I reattach the speed booster it works fine. Does anyone have experience with the problem?

Stefan



ken.vs.ryu
Registered: Apr 24, 2005
Total Posts: 3503
Country: N/A

Do you have a non-SB adapter that makes the nex act the same way?



H.Lux
Registered: Nov 21, 2010
Total Posts: 419
Country: Germany

ken.vs.ryu wrote:
Do you have a non-SB adapter that makes the nex act the same way?

No never experienced that before. I occasionally happen to own a normal Metabones EF to NEX adapter and will try this one tomorrow (or later today, to be precise.).

Stefan



zarekr
Registered: Jan 05, 2011
Total Posts: 9
Country: United Kingdom

A bunch of new SBs for Fuji X have just been released - I've ordered the MD version and I'll do a comparison with it against the MD-FX Lens Turbo which I received last week as soon as it arrives. Excited! I have been using the LT adapter with the Rokkor 58 1.2 and the results are just 'ok' with a lot of smudging when shooting wide open. Hopefully the SB will be significantly better.



mco_970
Registered: Apr 03, 2009
Total Posts: 5288
Country: United States

michael49 wrote:
Speedbooster question:

I am considering one of these for my fuji xe1 - ideally I'd like to have eos mount so I could use a few canon lenses in addition to c/y lenses with adapter but one isn't yet available.

So.....


Do I get....

1. C/y mount and just use my C/y lenses?
2. Get nikon mount for use with some old nikkors? Could I use an adapter on my c/y glass to use with the nikkor speedbooster (c/y to G mount)?


I'd wait for EOS mount and adapt everything to EOS (Contax and Nikon).

I have adapter some CY to Nikon, and the ones I've done leave the back of the lens w/o a dust shroud, which is kind of scary in terms of trying to keep lenses from accumulating tons of dust. I have no desire to Leitax anything else over to Nikon mount for that reason.



Jman13
Registered: May 02, 2005
Total Posts: 10635
Country: United States

So, I can now join this thread. Received my FD to Fuji X SpeedBooster today. So far, I quite like it. It's not perfect, but it's far better than the LensTurbo with wide aperture lenses, and works quite well with my 50/1.4, 85/1.8, 135/2 and 70-210. Will try it with my 200/2.8 and 50-300/4.5L a little later. The 135/2 and 200/2.8 make a little less sense to adapt, though, since I have a Rokinon 85/1.4 (similar DOF, smaller and a little better on the edges than the 135/2+SB, and for the 200/2.8, I might as well use the 135/2 straight. )

My Vivitar 28 is terrible on it, but I'm not sure whether that's because the Vivitar 28 is terrible or because it doesn't work well with the SB...it's my dad's old lens from his A-E1 kit he gave me a while back.

Some samples. I was trying to see whether the nFD 50/1.4 or the FD 50/1.4 SSC worked better on the SB, and frankly, they both perform almost identically, though the new FD has smoother bokeh and actually a little more blur (which is odd...especially considering the SSC has the larger front element...so the SSC will go back to the store).

nFD 50mm f/1.4 @ 35mm, f/1.0:












nFD 85mm f/1.8 @ 60mm, f/1.2:







FD 50mm f/1.4 SSC @ 35mm, f/1.0:







zarekr
Registered: Jan 05, 2011
Total Posts: 9
Country: United Kingdom



Fuji X-E1 with MD speed booster & Rokkor 58 1.2 @ 1.2. My experiences are similar with Jman13's - much much better performance than the Lens Turbo.



Old Baldy
Registered: Nov 26, 2013
Total Posts: 1
Country: United States

LeadyGonzales wrote:

here some pictures of the NEX-6 plus some lenses:






FD85mm, Nikkor 20mm, Rokkor 50mm 1.2, Rokkor 85mm 1.2, Distagon 35mm 1.4



Hi

I'm very interested in the Minolta 58mm 1.2 with a Speedbooster on my NEX-7, but am trying to confirm if the lens needs any modification at all, to work with the Speedbooster and attain infinity focus.
I tried emailing Metabones, but they haven't had chance to answer me yet.

I saw your pic of the combo on your NEX-6, so thought I'd reach out to you to ask for your experience with that lens and the Speedbooster.

Thanks!

OB



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