MagicBooster for Ursa Mini 4K and 4.6K

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Michael Moore

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MagicBooster for Ursa Mini 4K and 4.6K

PostThu Jun 14, 2018 9:21 pm

Hey guys! You see this?
Somebody here has installed already this adapter? What about the risky to brick the camera during the install?
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Savannah Miller

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostThu Jun 14, 2018 10:33 pm

That video was shared on another thread about a speedbooster for the ursa minis. I'll try to find it.
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Patrick Acum

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostFri Jun 15, 2018 10:10 am

Yep, got one on my big Ursa, works fantastically well, easily a one stop boost
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Archibaldo de la Cruz

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostSat Jun 16, 2018 10:04 pm

I installed a Lucadapter on the URSA Mini 4.6K, and if you follow his instructions and keep an air blaster around, there’s no damage to the camera and you’ll gain an extra stop, plus a wider angle with no image degradation.
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Krzysztof Gluszek

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostSat Jun 16, 2018 11:21 pm

Archibaldo de la Cruz wrote:I installed a Lucadapter on the URSA Mini 4.6K, and if you follow his instructions and keep an air blaster around, there’s no damage to the camera and you’ll gain an extra stop, plus a wider angle with no image degradation.


Oh great! Could you please share any sample footage from UM4.6K with magic booster installed? Do you have regular or ultra version? What about vignetting? I was thinking about buying this adapter but no samples or reviews from UM4.6K is holding me back.
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Michael Moore

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostSun Jun 17, 2018 5:26 pm

I am curios if a Blackmagic official can tell us here about the risky to damage the camera or bad reaction if install magic booster.
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thomas bruegger

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostMon Jun 18, 2018 5:33 am

Krzysztof Gluszek wrote:What about vignetting? I was thinking about buying this adapter but no samples or reviews from UM4.6K is holding me back.


If you have the 4k the regular will be fine. On the 4.6k you'll need the Ultra. The regular will vignette.
Thomas Bruegger / garage5 GmbH
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Krzysztof Gluszek

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostMon Jun 18, 2018 5:59 am

Thanks, but has anybody really tested this? Both speedboosters seems to have the same 0.71x factor so both will give slightly less than 1x crop (1.34×0.71=0.98x). Ultra is twice the money and i got an email some time ago from lucadapters stating that ultra is just a better quality glass and both will fit... But this is the only information, no samples whatsoever from 4.6k, i have seen the review and the author claims that only ultra is good for 4.6k... 500euro vs 1000euro when there is absolutelly no test samples is little hard to justify.. Does anybody have anything? This adapter is realy a great idea and i am shocked that such a construction can exist - that somehow there is a room (and even with a thread) in the camera for putting glass inside- makes 4.6k looks like full frame, so really URSA FF is available now! And no issues with glass, electronic etc. Wow! I have FF canon glass (16-35, 100, 70-200) and i am little bit worry that 0.98x crop can cause vignetting on widest settings. Maybe lens image circle is little bit bigger, i dont know... Please anybody who has the adapter - send some samples from 4.6k.
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thomas bruegger

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostMon Jun 18, 2018 6:52 am

As said the regular does vignette on the 4.6k. i did a test with it months ago. meanwhile i got the ultra vom lucadapters and there was no vignetting but i had to send it back because backfocus was not good, the barrel was not close enough to the sensor so most lenses would not focus to infinity. im still waiting to get the fixed ultra back.

here is the regular vs a FF DSLR with same Lens:
https://drive.google.com/file/d/15koI-G ... sp=sharing

the DSLR images are slightly zoomed in to match them up with the 1.1 crop of the 4.6k.
Thomas Bruegger / garage5 GmbH
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Krzysztof Gluszek

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostMon Jun 18, 2018 9:10 am

Thomas, thank you very much!
This was exactly information i needed, please let us know when you get your magic booster fixed and if you could then post some samples, maybe even couple DNGs straight from card.
Was it hard to unscrew the black, inner part from the camera? I just tried but it seems to stick quite hard.
Cheers!
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Archibaldo de la Cruz

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostMon Jun 18, 2018 11:33 am

Here's a comparison video of four Leica R lenses with the Lucadapter Magic Booster Ultra (using Caldwell elements). I had two cameras side by side—one 4.6K with adapter and one 4.6K Pro without—and swapped out each of the lenses (removing the Magic Booster multiple times is impractical). The sun was shining for the first couple of shots, but the rest of them were shot in the shade of the hillside behind the camera, so I just exposed for the best light situation as it changed. You will, of course, gain an extra stop with the Lucadapter focal reducer, and you'll see the real angle of view of your full frame lenses. I don't notice any vignetting; lenses focus to infinity.

Shot in UHD resolution, lossless RAW

Shot at Echo Park Lake, Los Angeles


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Michael Moore

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostMon Jun 18, 2018 12:48 pm

If i use magic booster on my ursa mini 4K with sigma 18-35 mm still lens will vignetting at 18 mm?At f1.8 and 800 ISO its like at f 1.2 or 1600 ISO ?
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Denny Smith

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostMon Jun 18, 2018 4:50 pm

Michael, with a 0.71 expansion factor on the larger sensor in the UM 4K, yes, it will vignette at 18mm and probably at 20mm. The Lucaadapter was designed to be used with full frame 35mm lenses, not APS-C.
The Sigma just covers the sensor at 18mm on a GH5S (MFT) in 16:9 when used on the 0.71 Speed Booster (same optics), and starts to darken at the corners slightly at 17:9, so it will vignette on a larger sensor.
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Krzysztof Gluszek

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostMon Jun 18, 2018 6:23 pm

Archibaldo de la Cruz wrote:Here's a comparison video of four Leica R lenses with the Lucadapter Magic Booster Ultra (using Caldwell elements). I had two cameras side by side—one 4.6K with adapter and one 4.6K Pro without—and swapped out each of the lenses (removing the Magic Booster multiple times is impractical). The sun was shining for the first couple of shots, but the rest of them were shot in the shade of the hillside behind the camera, so I just exposed for the best light situation as it changed. You will, of course, gain an extra stop with the Lucadapter focal reducer, and you'll see the real angle of view of your full frame lenses. I don't notice any vignetting; lenses focus to infinity.

Shot in UHD resolution, lossless RAW

Shot at Echo Park Lake, Los Angeles





Big thanks for the information and samples!
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Michael Moore

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostWed Jun 20, 2018 9:40 pm

For ursa mini 4K standard magic booster its ok? What is the difference between standard and ultra for ursa mini 4K not 4.6K?
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Archibaldo de la Cruz

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostWed Jun 20, 2018 10:17 pm

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Krzysztof Gluszek

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostThu Jun 21, 2018 7:09 pm

I have just ordered MB ultra for my 4.6K - i am very intrigued what the final effect will be... I have been using 5d3 with magic lantern couple of years now and i have always missed that full frame look in ursa... I will test it with canon 16-35 2.8, 70-200 2.8 and the old sigma 24 f1.8.
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Krzysztof Gluszek

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostSun Jul 08, 2018 6:43 pm

So i get the magic booster ultra for 4.6K, everything looks great but unfortunatelly i cannot focus to infinity with canon 16-35 f2.8 L II on focal lengths 16-20mm. Tomorrow i will send it back, Luca told me that he will be able to fix that. More than 20mm is okay and 16 is ok with aperture around f10. I tested canon 70-200 f2.8 L IS II and canon 100 L IS macro - both are ok.

It is a remarkable thing for 4.6k! Really, i am astonished how good the image is! What is interesting - with the magic booster installed i tried sigma 8-16 - of course it gave a very strong vignette as it is apsc lens - but for 2K 120fps crop it is great - i will be able to get ultra wide angles for 2k raw slomo!

Installing is not as bad as i thought after watching some reviews, just couple of minutes in more or less clean environment - i think i will be able to mount and remove this before shooting day... With adapter installed sensor also is much better secured - and it is much easier to clean the adapter with a cloth when something get inside during lens change versus cleaning the glass filter which is very deep inside.

I have made only a quick tests with flowers and stuff but i know that when i get my magic booster back i will use it a lot! I used 16-35 f2.8 L II (16mm only with close focus) and 70-200 f2.8 L IS II.

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rick.lang

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MagicBooster for Ursa Mini 4K and 4.6K

PostSun Jul 08, 2018 11:19 pm

Lovely test illustrating use of 2K/HD on the URSA Mini 4.6K, Krzysztof! I shoot mostly 2K (or 4608x1920 when I need maximum angle of view).


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Phillip Bergman

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostMon Jul 09, 2018 6:47 pm

How much does this thing cost?
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rick.lang

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MagicBooster for Ursa Mini 4K and 4.6K

PostTue Jul 10, 2018 2:12 am

Go to the Facebook page and send a message to Luca.


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Last edited by rick.lang on Tue Jul 10, 2018 1:48 pm, edited 1 time in total.
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Krzysztof Gluszek

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostTue Jul 10, 2018 6:50 am

Unfortunatelly it is much more expensive - Magic booster ultra for 4.6k is 899 euro. Cheaper version which fits 4k is 499 euro.
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rick.lang

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MagicBooster for Ursa Mini 4K and 4.6K

PostTue Jul 10, 2018 1:48 pm

Thanks, Krzysztof! That 299 figure popped into my head. It’s possible it was 299€. I tried to find the source for that figure, but failed. I’ll amend my post.


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Last edited by rick.lang on Tue Jul 10, 2018 1:59 pm, edited 1 time in total.
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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostTue Jul 10, 2018 1:58 pm

Although the Magic Booster (Lucadapter) is impressive and may even have its advantages over the SpeedBooster, there’s one consequence that bothers me compared to the Metabones SpeedBooster.

In use, the Magic Booster would seem like a permanent change that’s always going to be on the camera. I can’t see removing or adding it in the field. With the SpeedBooster, it’s less onerous to remove it for a shot where you want a narrower angle of view from your longer focal length lens.


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Denny Smith

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostTue Jul 10, 2018 6:37 pm

Right Rick, changing the Metsbones, is like changing a lens, unless like me you screw it to the cage, then you need to remove the two screws, but that is not a big deal either. Or like I did with the Micro camera, Mount a Nik Speed Booster to one and keep the other with MFT or PL mount.
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Krzysztof Gluszek

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostTue Jul 10, 2018 9:09 pm

I thought it would be much harder to install and remove the magic booster - of course it is almost impossible to do in the field between the takes. I can really imagine putting it in and out before the shoot though - i could choose wheather i want super35 or FF for my project.
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Denny Smith

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostTue Jul 10, 2018 11:17 pm

Well, yes and no, at the end it is still a S35 size sensor at the same resolution for a given gate size. The only thing that changes, is the AOV of a given focal length lens. ;)
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Krzysztof Gluszek

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostWed Jul 11, 2018 12:19 am

Of course it is s35, but is as close to FF aov as it can be, 1.38x x 0.71 gives 0.98x crop, lenses feels exactly like in 5d. Cameras with 1.5 or 1.6 crop gives 1.1-1.2x crop with speedboosters so ursa has an egde here. It is quite suprising for me that blackmagic used some element which can be easily screwed off and replaced with speedbooster lens which by coinscidence has the same diameter :) This is what makes this camera even more interesting than ever. About the resolution- doesnt alexa LF has similar pixel count 4.5K FF sensor?
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Krzysztof Gluszek

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostThu Sep 06, 2018 7:14 pm

I did some test with 4.6k and magicbooster ultra.

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Denny Smith

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostThu Sep 06, 2018 7:27 pm

Nice, the car shots were very good, but either the lens or the combo of the focal reducer and lens are not handling flair very well in some of the shots.
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rick.lang

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MagicBooster for Ursa Mini 4K and 4.6K

PostThu Sep 06, 2018 8:00 pm

Generally looks good, but I suspect the coating on the Magic Booster may need refinement. I’d send the clip beginning around 24” to show them.


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Archibaldo de la Cruz

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostFri Sep 07, 2018 6:40 pm

The Magic Booster Ultra uses high quality Metabones Speedbooster glass, rehoused—not cheaper, no-name elements—so shouldn’t it perform the same?
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Denny Smith

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostFri Sep 07, 2018 9:43 pm

Yes and no, depends on how internal reflections are handled. Reusing good we’ll know lens optics is a good start. Some lenses just do not play well with a Speed Booster in some lighting situations, this might be what we are seeing here with the flare.
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rick.lang

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MagicBooster for Ursa Mini 4K and 4.6K

PostFri Sep 07, 2018 11:23 pm

I think the glass is fine, but there may be a problem that the coating has issues that only show up in certain situations. Most times it may be perfect (especially in the lab where the lens is tested on a bench) and in another situation in a real shoot it acts up. A different coating may be needed and the vendor should look into that possibility.

Metabones may not be eager to help though given they have no quality control over rehoused glass. But you never know; they may see there’s a better way to do their own product. Denny may be right though, it could be an issue with having a lens in front of the Magic Booster and Metabones can say they have no problem when they are the first lens in the chain.

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TeryWilson

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostSun Sep 30, 2018 3:18 am

I just stumbled upon this adapter and found it interesting to get for my 4.6k mini I have on the way.
Check this out:


I can't see myself spending this much money on my 4.6k EF mini and I can't even remove it easily in the field. I would love to see a metabones adapter made for the EF mount like this for EF lenses. Right now my lenses are APS-C except for my iRix 15mm
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rick.lang

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostSun Sep 30, 2018 4:06 am

It can work on the Mini 4.6K, but I personally don’t want to be changing something in and out that close to my sensor; if you put it in there for good, fine, but swapping it frequently and in the field as you can a SpeedBooster is out of the question.


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Denny Smith

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostSun Sep 30, 2018 4:47 am

Terry, it is not possible to make an adapter Speed Booster to go from EF to EF, you need room for the optical block, so an external SB only works when you have a big difference in FFD from Camera Mount (i.e. MFT or Sony E) to the lens mount, EF in this case. An EF to EF is just not possible, as you would change the lens FFD and focus distance (think close-up rings). ;)
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TeryWilson

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostSun Sep 30, 2018 5:48 am

Oh ok cool. Thanks for clarifying guys.
Tery Wilson
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Tyson Preyer

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostSun Sep 30, 2018 10:57 pm

I don’t know how I missed this... By far the biggest thing that pushed me towards an FS7 was the ability to use a speed booster. (And the fact that the UM 4.6 has a light hungry sensor.)

Why isn’t Metabones making their own version of this?

(I’ve got today, when I read the words “quality control” and “Metabones” in the same sentence, Rick, I almost choked on my Cheerios. lol Of the 8 products I’ve purchased from them, 6 have had significant QC errors— 2 of them resulting in serious damage to a lens. It seems Dr. Caldwell is *the* brains behind that operation, and doesn’t have time to oversee their QC. So, until a legitimate competitor arrives, I’m stuck in this relationship. :?)
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Jack Fairley

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostMon Oct 01, 2018 12:17 am

I could be wrong, but I believe he designs the optics, and nothing else.
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Denny Smith

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostMon Oct 01, 2018 12:55 am

Yes, that is correct, Jack. I have had good luck with my. Etabones products, which included two Speed Boosters, and a dump adapter, and lens support kit. As for damaging lenses, Metsbones posts a list of which lenses will not work with their Speed Boosters, due to too far of a rear lens protrusion.
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rick.lang

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MagicBooster for Ursa Mini 4K and 4.6K

PostMon Oct 01, 2018 2:03 am

Tyson, I can understand you have a different perspective on Metabones SpeedBoosters with that experience. I don’t know if it was just poor quality control in the manufacturing of the adapters or other causes. Brian Caldwell’s role is the optical design, but I think your experience relates to factors other than the optics. Hope this gets better for you!


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Mattias Kristiansson

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostMon Oct 01, 2018 1:06 pm

I have an URSA V1. I am very tempted by the Lucadapter, but I know what will happen if I buy it. The 4,6K turret will be announced the next day...
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Denny Smith

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostMon Oct 01, 2018 4:27 pm

Then what are you waiting for Mattais, if ordering this this will get rhe 4.6K turret out! :roll:
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robert Hart

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Re: MagicBooster for Ursa Mini 4K and 4.6K

PostMon Oct 01, 2018 5:58 pm

Matthias.

I don't have the exact Luca Adapter but something I cobbled together myself for Nikons and some PL lenses using the Metabones 0.71x ultra optic before Luca released his product.

A focal reducer does genuinely improve the utility of the original big URSA. The extra low light performance is a bonus.

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