Blackmagic Cinema Camera shutter angles explained
Posted 24 July 2012 - 04:47 PM
For DSLR users thinking of moving up to the Blackmagic Cinema Camera here's a guide to the biggest differences between a DSLR and an actual cinema camera.
Posted 24 July 2012 - 06:49 PM
Posted 24 July 2012 - 07:03 PM
Is 180° still 1/48s if you are not filming with 24p?
Nope. That is why they use angles as the standard, because they speak a common language across different video standards.
Posted 24 July 2012 - 07:04 PM
Is 180° still 1/48s if you are not filming with 24p?
An 180° equals twice the frame rate in the shutter speed.
1/48 at 24fps
1/50 at 25fps
1/60 at 30 fps
These are all the same as an 180° shutter on a movie camera.
90° would be four times the frame rate, and setting the shutter speed to the same speed as the frame rate would be the same as a 360° shutter angle.
Standard is 180°, but other shutter angles can be used for effect.
In DSLRs people tend to mess with it more than in cinema cameras, to compensate for exposure, etc, but in the end that can cause problems with inconsistent motion blur between scenes, etc.
Posted 24 July 2012 - 09:49 PM
Posted 24 July 2012 - 10:11 PM
methinks some companies will be cursing it.
praying willing a sensor or system melt down.
i hate the design but the guts are looking good.
take the crap off the front put a M/43 mount on it and you have a real killer
mr jannard's gonna have to buy these suckers and shut the company down before they start moving up the sensor sizes scale. at that point steam will start pumping out of big jims face.
- nahua likes this
Posted 24 July 2012 - 11:10 PM
"I cinematographer has to know how to expose light, nothing else". That's poppycock. A cinematographer who is merely a bag of knowledge with a tool is a operator, not an artist.
Posted 24 July 2012 - 11:50 PM
Considering what they are offering the world, I think I can wait patiently and not sit there moaning like some people I've seen start doing recently. What are you, a child!?
No, but a it's a good sign if a company can deleiver on schedule. Conversely I don't think it portends well for the ultimate product if a company uses an early release date as "bait".
Posted 24 July 2012 - 11:55 PM
Posted 25 July 2012 - 12:13 AM
Posted 25 July 2012 - 12:29 AM
Posted 25 July 2012 - 12:32 AM
gh2 sensor : 17.3 x 13.0 mm
I was curious about dof like a bunch of folk. These shots look fine to me. It's supposed to be a m43 sensor anyway right? Most professional films don't look like they were shot on a full frame with a 0.95 wide open anyway... Now i can pre order the dmn thing.
BM: 15.6 x 8.8 mm (active), 16.64 x 14.04 mm(total)
Posted 25 July 2012 - 01:08 AM
god damn their aussie eyes.
his attractive intern stacy holds his hand and says big jim it will be ok for sure.
the the little sensor it will burn up in no time.
data through put will melt that plastic sucker,chill out iceman.
now how about a back rub and a dip in the hot tub.
thanks says jim.
stacy do you really think the camera will melt..
and it will be ok..
i mean first the sauerkrauts with alexa now this.
what about my red flock my followers my people.
i feel rudderless.
get over hear in the tub jim.
stacy yes jim
have you seen my rubber ducky
- EOSHD, nahua, Germy1979 and 1 other like this
Posted 25 July 2012 - 05:39 AM
Oh anyways, my point is Andrew, is that you should start a poll or "top-ten" list of the new "excuses" to not use the BMDCC.
My running list so far is:
"worrying about how to hold the camera will distract from framing and lighting"... or some other bullshit that makes no sense at all.
"it's too small and the crew won't take the shoot seriously"
This is the tell-tale statment of either the shittiest film-makers on the planet, or closet gear-whores. If you hear someone say this, there is a 100% chance that thier films will always be absolute garbage with no hope of ever improving. Avoid working with, contact, or even talking, with these people. Some of thier aneurysm-inducing logic may seep into you head and poison you. It's just not worth it.
"it's not expensive enought to be professional"
Many roads lead to this level of stupidity. But it is most likely is that these people have just recentley worked thier first hollywood AC job after film school and are currently undergoing "professional" indoctrination. In 2 years time, the only acceptable shooting formats to them will be 35mm film, or Arri's next offering.
-Too much dynamic range
"detailed-shadow low-contrast grades are sooo 2012... "professionals" prefer crushed blacks)
These people are the same who are now claiming that shallow-DOF is amature. Thier logic is, that whatever features afforable cameras currentley have, must not be "professional". It goes without saying, that these people experiance extrodinary cognative dissonace and pain, and (since cameras like the Alexa and Red also have high-dynamic range) thier cognative processes are constantly being interupted by logic-wrenches. These people are usually the disgruntled camera-op's on set who you'll find yelling at the PA's and production comapny for only providing 32" set monitors.
"If it doesn't go up to ISO 45,000 like the 5DIII, it isn't professional"
Just Canon fanboys. These r-tards are the ones that can actually justfity buing a C300 over a Epic. There is no logic here. Just brain-washed lemmings. The big manufacturers love these guys.
yes, I belive that "the established" will even take stabbs at RAW with asinine statments like, "RAW is for amatures that can't expose on set" or "RAW gives you TOO many options, and confuses the "clients""
That's all I can think of for now... I'm sure there will be many more to come.
- Ernesto Mántaras likes this
Posted 25 July 2012 - 06:05 AM
I've got a feeling this thing is gonna be sick. I can't wait to see some real world images and reviews when it hits the streets. In the meantime i've got to read up on the workflow for this camera and figure out what my system will have to be like etc. Very interesting days ahead.
Posted 25 July 2012 - 07:39 AM
They're calling the BMCC a "toy" and that it "doesn't perform great in the field". I'm sure that's what others said about RED when they were up and coming...I can't wait to see indie films shot on the BMCC that obliterate indie films shot on RED.
Posted 25 July 2012 - 11:55 AM
Some morons over at RedUser already talking shit: http://reduser.net/f...a-Camera-update
The thread on RedUser seemed quite reasonable to me. Very reasonable by RedUser standards. Largely positive comments, actually.
The screen grab does look to be noisy, though, and that worries me a bit. However, with raw or a high bitrate codec the noise should at least be organic.
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