The idea is not new and also not so complicated that one could not easily copy it. We&re talking about a Focal Reducer/Speedbooster, which can be sunk directly into the camera housing in front of the sensor.
For Blackmagic cameras this has been offered by LucAdapters on a small scale for quite some time, which recently also offered a Magic Booster for the Blackmagic Cinema Camera 6K via Kickstarter.
But it costs about 600 Euro to order in advance. A Chinese manufacturer now offers a similar concept for less than half the price.
Even here, the margins shouldn&t be bad, because here as there, a meanwhile "normal" x71 focal reducer optic element will most probably be installed that can be purchased at via Ebay already in good quality under 70 Euros. Dreist is definitely the name, because the copy is also called Magic Booster, but the company is called CineEye and not LucAdapters.
In fact, both Magic Boosters - if the quality is right - should significantly upgrade the Blackmagic Cinema Camera 6K. Thus, the camera has a crop factor of 1.2 (instead of 1.59 in the original) and it gains one f-stop in light sensitivity. This makes it a direct competitor for much more expensive 6K full-frame cameras.
And not only that: It becomes a camera that can boost EF lenses (which is not possible with normal speedboosters on the EF mount). In addition, the electronics of the lens remain usable, which can be very interesting for stabilized optics, among other things. In any case, we are very curious whether the concept will work well in practice.
Further test pictures can be found at see here...
Thanks to Frank Glencairn for the hint in our forum...