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
www.garage5.ch
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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
www.garage5.ch
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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.
Cheers
Denny Smith
SHA Productions
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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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