Metabones Speed Booster
/forum/topic/1181879/22

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LeadyGonzales
Registered: May 19, 2011
Total Posts: 422
Country: Switzerland

Hi there,
i got it as well. What i don not like are the strong barrel/wave distortions ! Can be very ugly

However, for some lenses it might be OK. The bokeh is nice, the sharpness OK.

- L.

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



Brody LeBlanc
Registered: Oct 04, 2007
Total Posts: 1038
Country: Canada

ooooh baby! they look oddly appropriate on the NEX body. can't wait to see how the R to X looks with the 35/2 mounted.



sebboh
Registered: Nov 02, 2009
Total Posts: 10680
Country: United States

LeadyGonzales wrote:
Hi there,
i got it as well. What i don not like are the strong barrel/wave distortions ! Can be very ugly

However, for some lenses it might be OK. The bokeh is nice, the sharpness OK.

- L.

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


don't keep us in suspense, how do those last three perform wide open on the SB!?!



jxsq
Registered: May 06, 2004
Total Posts: 1375
Country: United States

LeadyGonzales wrote:


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


So these lens have been modified into EF mount already, am I right?



Brody LeBlanc
Registered: Oct 04, 2007
Total Posts: 1038
Country: Canada

Has anyone else ordered from metabones in the last couple of days? Turns out, they're not shipping again until the 17th, shame.



inglis
Registered: Feb 24, 2011
Total Posts: 328
Country: United States

LeadyGonzales,
How far do the FD and MD adapters focus, since the EF is further from the sensor?
John



LeadyGonzales
Registered: May 19, 2011
Total Posts: 422
Country: Switzerland

hi,

well ... weather is bad - pictures accordingly

however, ... i try to hurry with pictures.

yes, all my lenses i have converted to EF, since I got a 5D MarkII 2 years ago. Even FD 85mm, is converted, but it would strongly hit the mirror by ca. 2-3 mm.

The converter gives you the FF look, but it is not suited for architecture shots, since it favors barrel distortions on the border of the picture. bokeh is fine. Up to now i mainly used the 50mm 1.2, since it fits best. For the FD 85mm 1.2 i need a grey filter. It can not be used at daylight (< 1/4000 at iso100).

- L.



inglis
Registered: Feb 24, 2011
Total Posts: 328
Country: United States

Vivek and Brian Caldwell note on GetDPI that the CY 35-70mm 3.4 zoom vignetting is a result of the zoom, so would also occur on FF,
Link to post
From Brian:
"Thanks for posting the Zeiss data sheet. Using the published exit pupil data for the 35-70/3.4 I was able to check the SB design and can verify that the SB itself won't contribute any vignetting at all at the 35mm end. In other words, 100% of the vignetting seen in John's 35mm/3.4 test shot (25mm f/2.4 actual) is due to the attached zoom lens.

The exit pupil distance of the 35-70mm/3.4 grows from 57mm to 78.6mm as you zoom from 35mm to 70mm. For an exit pupil distance of 78.6mm its possible to get a trace of vignetting in the extreme corner with the Speed Booster, but most likely the zoom lens blocks the pertinent rays before they even get to the SB so that the SB effectively contributes no vignetting throughout the zoom range."



theSuede
Registered: Jul 31, 2008
Total Posts: 2269
Country: Sweden

That would be easy to check with some corner-placed OOF blur discs. If the discs are cats-eye shaped even when used on a normal setup, then the lens is giving a hard mechanical vignette.



LeadyGonzales
Registered: May 19, 2011
Total Posts: 422
Country: Switzerland

hi,

some examples with MC Rokkor PG 58mm 1.2 @1.2 on NEX-6 and SB:

- L.












Brody LeBlanc
Registered: Oct 04, 2007
Total Posts: 1038
Country: Canada

Are there any samples floating around of a 35/1.4 or 35/2 with the speed booster?



LeadyGonzales
Registered: May 19, 2011
Total Posts: 422
Country: Switzerland

samples not yet, later ..

here FD85mm 1.2L





-L.



GrevGrev
Registered: Feb 17, 2013
Total Posts: 5
Country: Australia

New here and thought I'd reply because I've got this for about 2 weeks now.

I have the NEX-7 + Speed Booster and I only have one of the EF 50 f1.8 lens since I'm a Nikon guy, aside from that, the notable lenses for this purpose are...

- Nikon AiS 50mm f1.2
- Nikon AiS 35mm f1.4
- Nikon AiS 28mm f2
- Nikon AiS 180mm f2.8
- Samyang 24mm t1.5 video
- Samyang 35mm t1.5 video
- Samyang 85mm f1.4
- Sigma 50mm f1.4
- Rokkor 58mm f1.2 (not converted at all)
- Pentax m42 55mm f1.8 (don't think I can get this mounted yet)

I can test some of them when I have time though! I'm just busy because I'm working full time and I'm also doing a Masters degree...



inglis
Registered: Feb 24, 2011
Total Posts: 328
Country: United States

Would be nice to see the Samyangs!



GrevGrev
Registered: Feb 17, 2013
Total Posts: 5
Country: Australia

^ Ok! I will do some very simple ones, probably on the weekend.

And silly me, just bought the Nikon AiS 105mm f1.8 too... hahaha



ken.vs.ryu
Registered: Apr 24, 2005
Total Posts: 3521
Country: N/A

Nice grevgrev, post em all. The more the merrier.



inglis
Registered: Feb 24, 2011
Total Posts: 328
Country: United States

LeadyGonzales,
Lovely Bokeh and some 3d & central clarity!

Contax 100-300mm via Canon Speedbooster on 5n,

at 100mm


at 300mm



zhangyue
Registered: Jan 28, 2011
Total Posts: 2862
Country: United States

By inspect my Leica 50 and 35cron, One thing, I notice that almost all Leica R prime lens I have have a metal part stand out at lens back. Even most of them clear DSLR mirror,(only very small portion stand out but away from Mirror movement) they will still be problem with SB. So I think many of them need some surgery to be able to use on SB. at least there will be a lot more capability problems than Metabone website listed, which I feel sorry that Metabone don't mention it in their website at all.

Just want bring this to anybody interested in Leica R SB.



jojomon11
Registered: Sep 06, 2008
Total Posts: 7376
Country: United States

Dumb question

Since metabones never answered my customer services question, I will ask it here

Maybe they thought it was too dumb a question

I have a NEX7 and canon 50L and siggy 35 art lens, will the AF work using these lens?

Just wanted to make sure before I hit the buy button, not sure now anyways

Thanks! Phil



serhan_
Registered: May 08, 2006
Total Posts: 432
Country: United States

In dpreview, 50L reported as it has af with SB. However, the af speed might be too slow as they warned in the SB site. Here is a review of 50L with Nex-7:

http://verybiglobo.blogspot.cz/2013/02/metabones-speed-booster-review-nex-7.html

He has videos of 50L focusing...

jojomon11 wrote:

I have a NEX7 and canon 50L and siggy 35 art lens, will the AF work using these lens?

Thanks! Phil



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