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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 :)

32 & 64GB 90MB/s CF cards, now were talkin'...

Stuart English said:
That is a reasonable assumption. But so far we haven't identified any that do maintain the required sustained transfer (write) speed.
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What RC level are you making the "required" level to allow us to use in our cameras. Hate to sound skeptical, but it seems to me that it is highly unlikely that NONE of these will work reliably at the Rc28 or whatever that the original lexar 300x/red 8 gigs did.
 
CF cards

CF cards

Being skeptical is fine. But, the original Lexar 8GB CF cards and RED 8GB CF cards will work at both RC 28 or RC 36 at 4K 2:1 resolution.

The problem is that although CF cards have gotten bigger and promise faster transfers, but the latter isn't sustained when you test them.

Which is why we introduced the RED 16GB CF card that does sustain the needed transfer rates.
 
I have to say that I don't know how these companies can get away with the blatant false advertising of their speeds. SanDisk is the worst offender lately. Their 90MB/s CF cards are terrible. They perform very erratically and often have complete stalls during transfers. I have yet to get them to burst to the full 90MB/s on reads, very close, but only in the form of a spike. Sustained reads are in the high 40MB/s, maybe pushing into 50MB/s depending on conditions, block sizes, sequential data quantities, etc.. write times are terrible. Can't sustain much better than 39MB/s with any consistency. EDIT> I shouldn't say write times are terrible, that is actually quite good for FLASH memory, it's just below what is needed for REDCODE in most situations and terrible in regards to the 90MB/s claim on their label.

I've found the Lexar 32GB to be quite good, but their performance falls off sharply as they fill up. And even at their best, they're nowhere close to as fast as the RED 16GB cards. They start out a bit faster than the 8GB RED and Lexar cards and are performing slower by the time they are half full.
 
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Maybe this was answered before, but why did Red choose to put a lock on their 16GB cards when using devices such as the Canon dslr cameras?
 
Will Epic have a larger internal cache so that CF card read/write intervals will no longer be an issue?
 
James McLellan said:
Any new news on working cards? Has anyone tested the cards mentioned above?
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Not sure what good testing is going to do. Red has made it clear that only Red-brand cards are unlocked on Red cameras. Regardless of the speed of an off-the-shelf card, it doesnt matter unless Red buys it in bulk and certifies it and sells it to us.
 
Rick Darge said:
Maybe this was answered before, but why did Red choose to put a lock on their 16GB cards when using devices such as the Canon dslr cameras?
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We didnt put a lock on the cards... the cards are custom made to work with the way we write to them, and that just doesn't work on normal cameras.
 
Jarred Land said:
We didnt put a lock on the cards... the cards are custom made to work with the way we write to them, and that just doesn't work on normal cameras.
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I must be tired ... the phrase 'on normal cameras' had me laughing
 
In the world of marketing (most of the time) the words hyperbole, exaggeration and unrepresentative should be applied.

For as long as I've been using computers storage-media companies routinely market their products using the peak burst speed/data rate which gives a highly misleading impression on their products performance especially for users like film makers who rely on sustained data rates.

It's not so bad now but I remember a time when the advertised specifications (even on the data sheets) for HDD's gave the impression that their drives were so fast that there would be no need for raids - many had claimed rates(sustained and peak) so high as to suggest that an individual IDE drive was capable of sustained uncompressed video.

Only real-world testing will give a user the information they need; hence the "SLOW MEDIA" warnings!

JohnF
 
Does anyone know the exact data rate of a RED 16GB CF card? We need a better resolution using CF cards and the time consuming copy process afterwards. We do copy all our cards to a Nexto and a MacBook. 16GB need up to 25 Minutes time...

I just scanned this whole thread and i'm interested in new tests with other CF cards. Has someone flashed a new firmware to these Lexar or Sandisk cards?
 
The bottleneck is not the cards, it's the HDDs inside the Nexto and the Macbook. OMG, how can you work that way??? <sorry>

16GB (full) offload in 2~3 minutes via the eSATA, via RED Station or other good eSATA reader, if you have a fast enough drive to copy to. I think the read speed on the RED 16GB cards tops out around 90MB/s off the top of my head. I don't know, haven't really timed it, just done approximates. The 8GB RED/Lexar cards are slower.
 
why not the lexar reader (upto 4CFs) via 1 firewire800 port
+ min. 1 backup on external harddrive/ssd

...but!!! the best solution is to buy "more" 16gbCFs for a whole shootingday
and offload&format only after the shooting"day"
...like your footage:)

edit: i think with nexto y get sonner or later in batterylife trouble...
 
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