CF-card data rates enough for Epic?

[Thomas Pohl]

Concerning the discussion about using SSDs or CF-Cards I´d like know if the use of the CF-cards is fairly future-proof. For example: Can I record 120 fps with 4-5k at RC 28-42? (or what would be the maxium?)
By the way: Does anybody knows the transfer rates of the RED CF Cards?

Thanx
Thomas.

 

[J. Bernard Vallon]

the max read speed of the 16gb CF cards that I've gotten through esata is a bit under 100MB/s

I would count on red migrating towards SSDs for price/performance reasons.

 

[Benoît-Joan Clariana-Roig]

SSD are mandatory today for higher speeds on EPIC.

 

[PatC]

http://www.red.com/store/media/product/red-mag-128gb this is so much better than CF cards. The future!

 

[Thomas Pohl]

Thanx for your replies - but once again my question:
Can I record 120 fps with 4-5k at RC 28-42? (or what would be the maxium?)

 

[Larry McKee]

I don't think anybody outside of RED really knows the maximum. But, I seriously doubt you will get more than about 30fps of 5K at RC28 on a 16GB card. That is a lot of data.

 

[Jannard]

Roughly to SSD...

5K 24fps at 3:1 or greater... (recommend 5:1)
5K 48fps at 6:1 or greater...
5K 60fps at 8:1 or greater...
5K 72fps at 9:1 or greater...
5K 96fps (or 120fps 2.40:1) at 12:1

Jim

 

[Mark Pugh]

Roughly to SSD...

5K 24fps at 3:1 or greater... (recommend 5:1)
5K 48fps at 6:1 or greater...
5K 60fps at 8:1 or greater...
5K 72fps at 9:1 or greater...
5K 96fps (or 120fps 2.40:1) at 12:1

Jim

Jim how does 12:1 compare to RC28 in terms of image quality?

 

[Jannard]

Jim how does 12:1 compare to RC28 in terms of image quality?

12:1 is about like RC24. RC28 is about 10:1.

Jim

 

[Gunleik Groven]

With similar cropfactors and compression rates as the R1, I guess you would get similar framerates to CF on the Epic. Which doesn't hold a lot of promise for decent 5k recording.

But this is just guesswork... And I guess not very many will know, as I have a hard rime seeing why one would not choose ssd for Epic...

 

[Jannard]

Shooting 5K at 120fps to an SSD the size of a chocolate bar is quite the miracle. Please compare to anything else ever made in the history of this industry.

The fact that it is RAW and not an RGB codec is the icing on the cake...

Jim

 

[Mark Pugh]

12:1 is about like RC24. RC28 is about 10:1.

Jim

Thanks, Jim.
How are ratios looking for maximum sensor size 16:9 formats? ( about 4.5k, I think).
Is sensor full height 16:9 an option you are planning or does it jump down from 5k to 4k?

 

[Jannard]

Not exactly sure of the question... but obviously the compression ratios improve as the resolution goes down. The math is easy...

Jim

 

[Mark Pugh]

Sorry... It's late. I'll try the math tomorrow.
2nd part of the question was meant to be: if 16:9 is the shooting format, will there be an option to shoot the full sensor height, making it about 4.5k? Or will options jump down from 5k to 4k?
I can imagine that full-sensor height shooting may be my default choice for 16:9, if available.

 

[Benoît-Joan Clariana-Roig]

But this is just guesswork... And I guess not very many will know, as I have a hard rime seeing why one would not choose ssd for Epic...

I totally agree. EPIC is a tool for professionals. They can afford and should use SSDs.