Nikon DX 12-24mm on BMPCC + BMPCC Speed Booster

Hi.

Does anybody have experience with this lens on the bmpcc speedbooster (with .58 magnification)?
Does it vignette?

The Speedbooster, or focal reducer, is not magnifying (increasing image size), it's actually doing the opposite (reducing image size) which is why you have number less than one - 0.58x. Any optic that magnifies will use a number greater than one; eg. 1.1x.

The Nikon DX-Format is their smaller sensor which is 24x16mm - similar to Canon's APS-C. The DX lenses have an image circle that's a minimum of 28.84mm to cover the sensor. In reality, they are probably larger so you're using a "sweet spot" in the optics. BTW, this is very close to Super35 3-perf which needs an image circle of 28.48mm.

The pocket camera has a sensor that is 12.48 x 7.02mm which needs an image circle of 14.32mm to cover it.

So, using some basic maths lets work out how the Nikon image circle is reduced when passing through the BMPCC Speedbooster:

28.48mm x 0.58 = 16.73mm

So you have more than enough coverage with that lens. Essentially the way I think about the BMPCC Speedbooster is that it provides a Super35 FOV on a Super16 sensor.

Tristan, the Pocket Camera with the BMPCC Speed Booster is closer to a Standard 35mm Cine FOV, than Super 35. A "normal" AOV lens on S35 is 35mm, on the Academy Std. 35mm (both in 16:9 aspect ratio) it is 30mm. 30x.58=17.4mm, which is the normal AOV on the Pocket camera.
Cheers

This clip was shot with the same lens via a BMPCC speedbooster modified to fit the IMS-Mount on a SI2K camera. The SI2K sensor is "9.59 mm x 5.39 mm" I understand is smaller than the BMPCC sensor of "12.48mm x 7.02mm", so what may not vignette on the SI2K may do so on the BMPCC. Going by the information on the image circle posted above, the lens should work fine on the BMPCC via Speedbooster.

These sensor dimensions have been copied from web sources and not the result of personal research and measurement.

Here is a link to Ken Rockwell's review of the lens.

http://www.kenrockwell.com/nikon/1224.htm

I had no issues using Nikon DX lenses on the Pocket camera with a Speed Booster, as previously stated, the image circle is more than large enough to cover the sensor.
Cheers