@kurth Indeed, I thought that too, that you can use EF-S lenses on MFT cameras as well.

I think their realization is just a matter of time, and considering the incrementing options of MFT mounts around I think it'd be just wise for Metabones to make it sooner than later.

The speed booster would gather f2 worth amount of lighting from f2.8 lens. DOF would be roughly equivalent to f6 on the BM compact due to its 3x crop factor if that's correct crop factor.

Don't forget, the SpeedBooster shallows up the DOF. I would assume that the SpeedBooster would at minimum return the DOF on lenses to something akin to what we're seeing on the GH2, much like it returns APSC DOF to something akin to what you get on Fullframe.

But I for one am far more interested in the Production cam. It isn't that much more expensive, and global shutter for what I like shooting is a really big deal.

Ugh... A 17-50 mm f/2.8 lens attached to the Speed Booster becomes a 12-35 f/2 lens. On the BMPCC it's equivalent to a 36-107 f/6 lens on a 35-mm photographic camera.

@balazer I think this is what I was thinking - "compared to a 35mm camera". The f-stop increases are the biggest turn offs for me.

Whenever I shoot with the Nokton, I double the focal length and double the f-stop to get the 35mm equivalent. With the BMPCC, it would triple, but then the speed booster would subtract one f-stop, no?

@balazer

how are you figuring this out for the 35mm conversion? I want to figure out what my 1.4 lenses would be as it equates to a 5d

balazer's f/6 is referring to depth of field ONLY, not to the T-stop (amount of light transmitted), or the f/stop (which is a ratio of the lens focal length and the physical aperture opening's diameter).

Yes, the speed booster does cause lenses to transmit an extra T-stop of light. Yes, it does make lenses WIDER. Yes, it does make the f/stop number SMALLER, because a smaller f number=bigger opening in comparison to the focal length. Remember, f/stop is a fraction!

So technically-speaking, NO a speed-boosted 17mm f2.8 is not f/6. It is f/2. But the depth of field that it produces on a sensor the size of the Pocket Cam will look like the depth of field from a full-frame camera with a 36mm f/6 lens attached.

@eyeiaye f/1.4 lenses with speedbooster become f/1.0 lenses in terms of Depth of Field and in terms of T-stop ("brightness" of transmitted light). But because the Pocket Cam has such a small sensor, you won't get the same shallow depth of field at f/1.0 as you would with an equivalent f/1.0 on full frame, or APSC, or even GH2 for that matter.

"They had a follow up interview with a BM rep and he said that they are using a Compressed RAW at about 1.5:1 Not a lot of Compression but he said you'd get about 30 minutes on a 128GB SanDisk SD. I believe he said he was using the fastest SanDisk they make. The ProRes to the same SD would get about 70-80 mins. That sounds good to me."

@Aria: I'm a little confused by the rep's statement here. If they're using the fastest 128GB SanDisk SDXC card to record 30 minutes of compressed RAW, then, well... the card they're using is pretty slow (only 45MB/s). There is no 128GB SanDisk 95MB/s card available yet.

It's only now that I realise that SSDs are far cheaper than fast SD cards:

SanDisk 64GB SDXC @ 95MB/s = 120€
Samsung SSD 120GB = 90€

Lower price, double storage.

Actually it makes quite sense. I just wasn't aware of that.

@niGGo I paid no more than $40 for any of the UHS-1 64GB Sandisk SDXC which I have bought (about a dozen). They go on special for that price from time to time. Normal price around $50 on Amazon.com

I seriously wish they put in a videomode with about 100mbps.

BMC v1 2.5k RAW is (apparently) 5MB/frame. It shoots 1.6x more pixels than the Pocket's 1080p, so:

Pocket uncompressed RAW: ~3.1 MB
Pocket compressed RAW (~1.5:1): ~2.1 MB

@ 24fps = 50 MB/s (compressed)
@ 30fps = 62.5 MB/s (compressed)

I guess most of us want just more DR, and we've seen with the GH2 that 50Mbps can get a long way.