BlackMagic Cinema Camera Technology Announcements & Latest Info'

maarek said:
That is wrong. The field of view changes considerably going from ff to 1.6x crop. What doesn't change is the mm. A 50mm on a 1/3" sensor is very, very telephoto.
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That wasn't my question. I'm very aware the field of view changes drastically when going from FF to 1.6x crop and the effect it has on a 50mm. My point was, most cinematographers in the business have been shooting on S35 for the past 15 years which basically has a 1.6x crop. So therefore they've been making movies just fine with that field of view. So I don't understand why we keep comparing everything to FF when no one in the film industry has been using that as a frame of reference when it comes to field of view. I just don't understand why everyone isn't using 1.6x crop as point of reference since that is what you would be using on an actual film set.

Fohdeesha said:
a gh2 has a 2x crop. The size of the active imaging area of the bm camera gives it a 2.416 crop, relative to full frame, just fyi.

http://www.tawbaware.com/maxlyons/calc.htm - scroll down to the bottom to calculate
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Thanks for the link! But again, why are we comparing everything to FF instead of 1.6x? If I was to shadow a union cinematographer and ask him why he was using a 50mm on this shot in regards to S35, everything he would tell me would be based off of a 1.6x crop.

Again, I could be wrong, but this is just my understanding of field of view and how it relates to S35, which is the standard in feature film making.
 
jambredz said:
Does this cam communicated with EFS lenses? Just wondering if my Tamron 17-50 would work on it. I know the cam's EF mount (but i dont know if that means electornically compatible also or just mechanically )
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Yes, some of the original footage was shot with the Canon EF-S 15-85 f/3.5-5.6 USM lens
 
John Brawley said:
Remember, the HD-SDI monitor output is a quick debayer. it looks good, but it's not got the same res as what's recorded on the DNG's.....
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Hey John, first of all, thank you SO MUCH for coming on the forum and sharing your experiences and answering questions. It's very helpful and much appreciated!

Second -- this puzzles me a bit ... since the camera can record ProRes or DNxHD, those have to be a full de-bayer. Doesn't the camera use that exact same debayer for the SDI output?

On the original Red One, its SDI output was what they called a "quick & dirty" de-bayer, and was never meant for accuracy in monitoring and most definitely not useful for external recording. It sounds like you're saying that the BMCC's SDI output is similar... but, the difference here is, the Red never tried to do a real de-bayer in-camera, whereas surely the BMCC does (for its 1080p recordings) so ... are you sure the monitor output isn't meant to be fully high-quality debayer?
 
stew75 said:
why are we comparing everything to FF instead of 1.6x? If I was to shadow a union cinematographer and ask him why he was using a 50mm on this shot in regards to S35, everything he would tell me would be based off of a 1.6x crop.

Again, I could be wrong, but this is just my understanding of field of view and how it relates to S35, which is the standard in feature film making.
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You are right. For Digital Filmmaking, we should be using Cine35 as the standard dimension, just as Barry did in his Af100 focal length chart. "Crop factor" was devised as a way to help still photographers compare new-fangled digital imagers to the film frame in their still cameras. As you know, still cameras run 35mm film horizontally for a 65mm image size. In movies, this is called VistaVision.

When the DSLR movie craze started to happen, the parlance of still-image "crop factor" trailed along with it. Many of the people making DSLR films were originally SLR shooters, so it made sense. As indie digital filmmaking has matured, more traditional filmmakers have joined the party. It is now time to compare sensor size to 35mm movie film, instead of the 65mm VistaVision of a FF still camera.
 
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refocusedmedia said:
Battery grip was already mentioned as being on the roadmap.
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Very good. I figured either one, BlackMagic or a 3rd party would do it. Just talked to few top 3rd Party developers- they couldn't be more
excited about the BlackMagic camera. Their thinking up all sorts of new accessories to go with the camera. I'm wondering if someone
might design a VF like the ones that attach to the DSLR's LCD, however to the rear LCD on the BMC.

Pappas
http://PAPPASARTS.WORDPRESS.COM
http://TWITTER.COM/PAPPASARTS
BlackMagic Digital Camera Info Thread: http://www.dvxuser.com/V6/showthrea...mera-Technology-Announcements-amp-Latest-Info
 
Barry_Green said:
Hey John, first of all, thank you SO MUCH for coming on the forum and sharing your experiences and answering questions. It's very helpful and much appreciated!

Second -- this puzzles me a bit ... since the camera can record ProRes or DNxHD, those have to be a full de-bayer. Doesn't the camera use that exact same debayer for the SDI output?

On the original Red One, its SDI output was what they called a "quick & dirty" de-bayer, and was never meant for accuracy in monitoring and most definitely not useful for external recording. It sounds like you're saying that the BMCC's SDI output is similar... but, the difference here is, the Red never tried to do a real de-bayer in-camera, whereas surely the BMCC does (for its 1080p recordings) so ... are you sure the monitor output isn't meant to be fully high-quality debayer?
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That's what I was told. They are "proud" of how good their debayer is on the HD-SDI output, but they said it was like RED...not really intended to be recordable...Which is why the Thunderbolt is there if you want external recording....

I'm not sure what happens with the "internal record" DSP though, but I think that is a seperate process to the monitoring/display process. (which is also what powers the LCD on the back)

My understanding is that the internal debayer is good for recording, but the monitoring debayer (monitoring and HD-SDI out) isn't intended for such precision.
 
The new Black Magic Design Cinema Camera - A talk with John Brawley

http://freytag-film.com/blog/artikel/talk-about-the-new-black-magic-design-cinema-camera

JB.jpg


Pappas
http://PAPPASARTS.WORDPRESS.COM
http://TWITTER.COM/PAPPASARTS
BlackMagic Digital Camera Info Thread: http://www.bmcuser.com/showthread.p...mera-Technology-Announcements-amp-Latest-Info
 
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Thanks for sharing Pappas.

Awful to have to read this...

Re DR - "...they are still working on the sensor calibration and that affects noise which affects DR but id say it's getting close to an Alexa. I think even BMD were surprised at how much DR they are getting."

...and know that Christmas is still more than 3 months away.
 
StMad said:
Thanks for sharing Pappas.

Awful to have to read this...

Re DR - "...they are still working on the sensor calibration and that affects noise which affects DR but id say it's getting close to an Alexa. I think even BMD were surprised at how much DR they are getting."

...and know that Christmas is still more than 3 months away.
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This is why I've already put my money down for the camera - broad dynamic range and ProRes recording.

I'd pretty much decided that a used-F3 would be my first owned video camera (The DR through SLOG and 10-bit output to ProRes recorders was what sealed the deal). Then along comes the BMCC and all of a sudden that level of DR and ProRes recording are available IN-camera, for a fraction of the price (albeit with a smaller sensor). Give me filmic latitude over resolution any and every day of the week.

What exactly I'm going to use my brand new PIX240 recorder for now... I'm not really sure. But I'll cross that bridge when I come to it (perhaps ProRes proxies whilst the BMCC records to Raw - at least then I'd feel like I hadn't wasted my money!).

God, it's a bloody exciting time to be making moving pictures.
 
The footage that I have seen so far seems to lean heavily to the green side. In the few examples with large areas of dark material there were many stuck pixels.
Combine that with NO audio meters and I am looking for more material to view before I would jump on the band wagon.
 
Continue the discussion at BMCuser.com. A new Landmine Community for Blackmagic Camera Users



StMad said:
Thanks for sharing Pappas.

Awful to have to read this...

Re DR - "...they are still working on the sensor calibration and that affects noise which affects DR but id say it's getting close to an Alexa. I think even BMD were surprised at how much DR they are getting."

...and know that Christmas is still more than 3 months away.
Click to expand...

Your Welcome- Yeah that Alexa comparison is awesome. It's good to see RAW DNG as well 10bit 4:2:2 pro res level of codecs finally be at this price point too!

Pappas
http://PAPPASARTS.WORDPRESS.COM
http://TWITTER.COM/PAPPASARTS

[size=+1][/size]
 
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