Kipon and Ibe announced the new Baveyes 0.7x adpater for Sony E-mount cameras. It’s basically the next Speed Booster alike adapter that sells for $300. STarting from January 10 there will be Nikon F, Canon EF and Leica R mount lens adapters. More details here:
via Mirrorlessrumors.
33 Responses
How is the aperture controlled on the Canon EF model?
If you buy 3 of these, might as well get an A7 ;P
Exactly my thoughts. Better get an A7.
I think the Canon EF model’s main value is that there are cheap adapters for Nikon, Pentax, Exacta Topcon, Retina, Vitessa, Contax/Yashica, Olympus OM, T-mount and a few I probably forgot that will fit onto the EOS adapter that save the cost of buying seperate Nikon, Pentax, Exacta Topcon, Retina, Vitessa, Contax/Yashica, Olympus OM, and T-mount speedboosters. At least that is why I’d buy that one even though I have no EF lenses.
Hi Andrea,
Quick impressions of the 18 105 f4 G lens can be found at:
http://usinglight.com/2013/12/11/a-quick-look-at-the-new-sony-18-105-f4-g/
The above page also has some links to videos shot with the same lens in the comments section.
+1 THANKS
I keep asking myself how they come up with product names like these.
Designed in “Bavaria” which is part of Germany. This optics could be pretty much “Designed in Germany”. That might mean it can be actually very good. Maybe not Zeiss/Leica good, but good (wonder why Zeiss didnt design own speedbooster). Anyway, BavEyes is most likely for Bavaria Eyes. 😀
It’s made (or at least designed) by IBE optics.
ibe-optics.com
That’s also written below the MTF charts.
Look at the mtf chart..not very good at all.
I don’t remember Metabones posting their MTF, maybe it’s even worse?XD
And focusing is manual only?
How do control the EF lens aperture?
What is the sense of converting a full frame lens on a FF A7 into an APS-C lens? Wouldn’t copping do the same???
I think it’s meant to be used with APS-E-Mount cameras. With the A7/A7r, I’d use FF-lenses directly.
Please somebody try medium format lens on A7 /A7r with any of these focal reducers. I wonder if optically works or not?!
no, wrong image circle
It will kinda work. But since the crop factor of MF-FF is not 0.7 (MF is way larger than FF), it’s quite pointless as you still won’t get the native MF FOV. You also don’t gain a lot of speed as MF lenses aren’t particularly fast to begin with.
Sorry for asking a silly question. 😛
A 1.4x tele-converter will lose 1-stop of light,
because it magnify part of the image circle.
but how about a 0.7x FF-to-APSC converter,
will it gain 1-stop of light?
because all the light in the Full-Frame Image circle reach the APSC sensor.
Just curious, sorry for asking irrelevant question. 🙂
Yes, that is exactly correct.
Yes, that is the attraction of this type of adaptor. It takes a FF capable lens and reduces the focal length so that after the crop to APS-C you end up with roughly the same field of view as if used with a FF camera and you gain the extra stop of light, and that is also true in terms of DoF. The key is how much quality is preserved, with the first Speed Booster the crop images were very close in quality to the FF images with the same lens, that is probably not true of the cheaper versions.
It’s still safe to say that with these adapters the IQ depends on the specific lens and your actual focusing distance, since with all the front elements moving while focusing and the adapter elements stationary it’s kind of like having a floating element group…that doesn’t float properly.
I’ve had really bad edges and corners far away on my Speed Booster but they’re much improved when focusing closer.
Too late to the market
Good news
The new tamron 150-600 will begin shipping Jan 17 in canon mouunt..other mounts later.
The US price will be $1069.
That is good news about the Tamron 150-600. I was hoping it would be less than $1000, but $1069 is close enough to be VERY tempting.
Yes it is a good news,
We can have a in lens stabilized version on a NEX body by using these adapter.
+ 1/2
Stabilzed canon version for nex yes…but use standard adapter without optics…..not a focal reducer.
Yeah, this is awesome! I’ll have to get one for sure. Its that perfect ‘travel’ serious zoom, when I dont want to lug around the 600 4. Images samples look very decent.
When this lens comes out at this price and quality I dont see why anyone would buy any of the current 500mm zooms
If it sells as well as I think it will Tamron might be able to scale it up to
200-800mm f5-6.5
Wieght 8lb
Filter thread 125mm
Length 13.5″
Cost $2000.
Min focus 11.6ft
One of these would be a nice toy to play with as a part of me wonders how much fun it would be to turn a 1.2 into a 0.9 lens… but then I look at the price and come to my senses.
They are now listed on eB*y
http://bit.ly/1a69D8I