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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

3K...

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Alexander Nikishin said:
4K 30 / 3K 60 / 2K should be 120 (With optical RAW port) if not, it should be 100
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I'm aware of those, but aren't those just the limitations given the available storage formats? Given an interface with infinite bandwidth and a device with infinite write speed, would those limitations still stand?
 
What about something like this?

This frame that is highlighted (not darkened) contains less pixels than the full 3k frame.

Oh and green == 2:1 frame height. Yellow is the smaller 3k equivalent 4k frame height.
 
Jannard said:
A scaled image can NOT have a higher frame rate due to the clock speed of the sensor.
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Ah so now I understand. We're looking at a max of 30fps in any scaled mode?

Jannard said:
This way you CAN have 60fps and record to RED Drive or 50fps to CF.
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Seeing as 3K upscaled to 4K (If delivering in 4K) would look better, that seems to be a benefit.

The real advantage I see with this build is REDCODE 36 though. Less compression should allow for better images. :biggrin:
 
noclip said:
I'm aware of those, but aren't those just the limitations given the available storage formats? Given an interface with infinite bandwidth and a device with infinite write speed, would those limitations still stand?
Click to expand...

Yes, due to the clock speed of the sensor.
 
Nathan Buxton said:
What about something like this?

This frame that is highlighted (not darkened) contains less pixels than the full 3k frame.

Oh and green == 2:1 frame height. Yellow is the smaller 3k equivalent 4k frame height.
Click to expand...

I think that depends on the sensor, it might be engineered to read optimally at 2:1 or 16:9 aspect ratios. But if you're going that route, I'd sell my first born for 4096x1706 (2.4:1) at 48 fps.
 
Nathan Buxton said:
What about something like this?

This frame that is highlighted (not darkened) contains less pixels than the full 3k frame.

Oh and green == 2:1 frame height. Yellow is the smaller 3k equivalent 4k frame height.
Click to expand...

excuse me, thats my daughter!
 
Now I wish I had ordered the hard drive option sooner.
-A
 
Okay, the math would seem to suggest that 4K cropped to 2.4:1 (4096x1706) would be possible at up to 40fps (assuming 60fps is the absolute maximum for 3072x1536). Can someone from Team RED confirm/deny?
 
Throw traditional aspect ratios out the window. I could get used to 2:1... now crop that to a 4520X1174 pixel frame and you have equivalent pixels to the 3k 16:9 format. (actually about 2,000 less pixels)
 
noclip said:
Just wondering, neglecting the speed limitations of storage formats, what are the maximum framerates the sensor could be able to handle at 4K, 3K, and 2K?
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If the information being posted over the past 2 years hasn't changed, it has been stated as 4K 60fps and 2K 120fps as the sensors clock speed limits.
 
parisrem said:
If the information being posted over the past 2 years hasn't changed, it has been stated as 4K 60fps and 2K 120fps as the sensors clock speed limits.
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With the optical RAW port, yes, but it doesn't look like many if any will be using that option, or for that matter if it will ever be released.
 
Pie in the sky idea here, but what if when you went to format a piece of storage media the camera gave you a "pixels per second budget"? You could then enter custom crop dimensions and the camera would tell you the maximum framerate you could record at for that resolution. For example, 40fps for 4096x1706 or 30fps for 4096x2048.
 
noclip said:
Pie in the sky idea here, but what if when you went to format a piece of storage media the camera gave you a "pixels per second budget"?
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I like it! Maybe Minutes per Gigabyte Budget is less nerdy.

The availabilty of Redcode 36 makes me think the announcement of 16G or 32G cards is only days away...
 
noclip said:
Pie in the sky idea here, but what if when you went to format a piece of storage media the camera gave you a "pixels per second budget"? You could then enter custom crop dimensions and the camera would tell you the maximum framerate you could record at for that resolution. For example, 40fps for 4096x1706 or 30fps for 4096x2048.
Click to expand...

not sure the bits are there to do an on the fly optimisation like that. but maybe. it would be a great idea.
 
noclip said:
Pie in the sky idea here, but what if when you went to format a piece of storage media the camera gave you a "pixels per second budget"? You could then enter custom crop dimensions and the camera would tell you the maximum framerate you could record at for that resolution. For example, 40fps for 4096x1706 or 30fps for 4096x2048.
Click to expand...

Interesting idea. That's essentially what the Phantom HD does, adjusting the frame height in 8 pixel increments. THe shorter the frame the faster it can shoot.

Mitch Gross
Abel Cine Tech
 
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