Metabones OM Speedbooster Adaptor Is Now In Stock

rendition

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you forgot 2x crop factor of m43 into account because this len is "Olympus OM to Micro Four Thirds Speed Booster ".

50 x 2 x 0.71 = 71mm

it increases one stop of light so it's f/1 on paper but if you are compared to full frame field of view, it still be f/1.4 (original field of view is 100mm f/2, increasing one stop of light is going back to 1.4)

so yeah, the len would be become 71mm f/1.4 portrait len full frame field of view. essentially your m4/3 camera would become ASP-C-ish camera with faster aperture.

With that being say, the 50mm len become a great portrait len for cheap
 

RnR

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Rendition, I think MajorMagee knows all that you wrote, he is purely talking about the lens. Its like talking about the Panasonic 25mm f1.4 - you don't talk about the x2 crop factor, or the depth of field, all that is implied :)

Good news on the OM... can't wait for the Konica :D
 

rendition

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Rendition, I think MajorMagee knows all that you wrote, he is purely talking about the lens. Its like talking about the Panasonic 25mm f1.4 - you don't talk about the x2 crop factor, or the depth of field, all that is implied :)

Good news on the OM... can't wait for the Konica :D
sure :smile: sorry if i went off-track on previous post, there's not much activity on this sub-forum.

anyway, i'm just wondering if anyone is willing to do len sharpness test of the metabone vs the chinese knockoffs. i'm pretty happy with the chinese nikon version
 

RnR

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anyway, i'm just wondering if anyone is willing to do len sharpness test of the metabone vs the chinese knockoffs. i'm pretty happy with the chinese nikon version
The designer of the speedbooster did a test over on dpreview. Discussion on the review on this forum -> https://www.mu-43.com/showthread.php?t=60531

Is there a Chinese version out for the OM, or AR legacy lenses yet?
I can't find any on a quick search. Which is a little strange. Why not make a product where Metabones have no presence... well until now.
 

wushumr2

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"Original" is still f1.4, and it's a 100 f2.8 equivalent, not f2. And as I understand it, depth of field is tied much more to actual focal length of the lens than solely to aperture, which is why there is that "medium format look" or "full frame look." Basically at short distances the blur will be identical for a 25 1.4 on m4/3 and a 50 2.8 on FF, but the background will steadily show more blur for the FF as the focal lengths increase.
 

tjdean01

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Rendition, I think MajorMagee knows all that you wrote, he is purely talking about the lens. Its like talking about the Panasonic 25mm f1.4 - you don't talk about the x2 crop factor, or the depth of field, all that is implied :)

Good news on the OM... can't wait for the Konica :D
Is anything in the works for Konica?


Does the tripod mount come off of the speedbooster?
 

RnR

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Is anything in the works for Konica?
Noone knows. Some, including myself, have emailed Metabones on the issue and gotten a variety of responses. So its a 'maybe'. Not a no. I didn't get any response at all, so maybe they are tired of all the emails :biggrin:

Does the tripod mount come off of the speedbooster?
Yes. They even give you the tools to screw it off.
 

MajorMagee

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http://www.dofmaster.com/dofjs.html

The 50mm f/1.4 lens on my old OMG Film Camera gives a 4.35 inch depth of field at 6 ft focus distance.

On the M4/3 bodies it produces a depth of field of only 2.17 inches.

That's the same as a 100mm f/2.8 on the 35mm film camera,

Using the Metabones Speedbooster on a M/4/3 the focal length changes to 35.5, and the speed increase to f/1 and the depth of field calculates out to 3.08 inches, and that's the same as a 71mm f/2 on the 35mm film camera.
 

MajorMagee

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So I bought one for Father's Day, and I've tried it with three different lenses and it won't even come close to infinity focus (way short). Has anyone else had this problem? They show you how to adjust it http://www.metabones.com/article/of/infinity-adjustment-speed-booster-only but claim that is has been precisely set by the factory and you shouldn't have to mess with it. Has anyone else had a problem with this? Did I get a bad copy and should just return it, or do they all need adjusting?

Also there is a small plastic ring that surrounds the lens on the camera side that was initially raised up in one area that eventually popped off revealing the set screw underneath. Because of where the screw is drilled through the side of the mount I can see that this plastic ring could never have lain flat in the groove it's supposed to cover, so I'm not surprised it came off. I'm just happy I didn't lose it inside the camera. I can probably just leave it off, but that's pretty poor engineering for a $400 adapter.
 

RnR

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I have two, Nikon G and CY. Never needed adjustment. Looking at both of them, the plastic rings are equally lying flat to the mount surface - no raised area. I think you might have the first bad Speedbooster in terms of QA. I would take pictures (perhaps replace the ring as you found it) and send them to Metabones asking for their advice.

I need to get off my arse and sell my Nikon G... too many lenses issues :frown:
 
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I've tried it with three different lenses and it won't even come close to infinity focus (way short)
Old thread, I know, but I just had the same experience, and almost sent it back.

But after cruising the Metabones website, I discovered the "infinity set" adjustment you can do. You have to loosen a set-screw, then carefully unscrew the rear element, re-tighten the set-screw, try it out, repeat until happy. Be sure to wear clean white gloves, because you can't really unscrew the rear element without touching it.

And once I did that, I must report that I am extremely happy with it. It took about four tries (I was being conservative), with perhaps 1.5 full turns of the rear element.

I had two cheaper ones: a Fotga for $60 that I sent back, and a Kipon Baveyes Ultra for $150 that I found acceptable for many things, especially longer lenses.

But when I put the legendary Olympus OM 21mm f2 on there to try to do some astrophotography panoramas, I saw nothing but coma and CA in the corners and edges. So I shelled out for the Metabones Ultra, and found it cleaned up all the coma and CA!

I think I'll keep the Kipon for use on the Olympus OM 600mm f6.5, which looks soft on micro 4/3rds, but which sharpens up nicely (even edges) with the Kipon.
 
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PakkyT

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I was just looking at the Kipon version today. At $135 shipped from Adorama not cheap but not terribly expensive to try out. Metabones are way out of my price range. Plus my OM collection is rather mundane, so not worth spending a lot on. But might be fun to turn the 100/2.8 and 135/2.8 into a 70 & 95 f/2.0.
 
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I was just looking at the Kipon version today. At $135 shipped from Adorama not cheap but not terribly expensive to try out. Metabones are way out of my price range.
I think that for those lenses, you'll be okay with it. Especially for $135 — I paid $150 for mine.

I agree about the Metabones price, but I couldn't resist getting it for 20% off ($359.20, instead of $449) on a special one-day evilBay sale. That sucker never goes on sale!
 

RnR

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Very happy that you found the Speedbooster to your liking Bytesmiths!

I was lucky last week... picked up a Metabones Speedbooster Ultra for the Fuji second hand from the bay. Much less than the RRP :2thumbs:

Fullframe'ness on the cheap :biggrin:
 

PakkyT

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I think that for those lenses, you'll be okay with it. Especially for $135 — I paid $150 for mine.
Ya I think I might of paid about $80 for the OM 135/2.8 and only $50 for the 100/2.8, so the Kipon would be more expensive then both of them put together. :rolleyes-38:

I agree about the Metabones price, but I couldn't resist getting it for 20% off ($359.20, instead of $449) on a special one-day evilBay sale. That sucker never goes on sale!
If I had a nice AF modern quality lens from Canon, Nikon, whatever then I could see where the price of the Metabones is probably worth the cost. Nothing I own would do a Metabones any justice. :jedi:

(I just wanted to use the Jedi emoji).
 

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