Cards for the DVX200?

Hi guys,
This post feed has been very informative. One question:
Can some U1 cards record in full 4K? I'm using a U1 Transcend 600x 32GB Class 10 90MB/s and I can select and record 4096x2160 on the DVX200 with no apparent issues. The footage looks good to me...
I would just hate to be limiting myself if for some reason there's a slight disadvantage to recording 4K on a U1 card that supports it...grain, banding, or something like that.
I don't have a U3 card to compare the footage quality, but I don't want to buy one if this U1 works just as well.

I'm aware of another DVX200 user who is also able to record full 4K with a U1 card.
 
I now have two 256 U3 Lexar cards, a 128 U3 Lexar and a 128 U1 Lexar. I can record with all the cards in UHD (didn't try the 4K) until they are filled. I have not seen any problems with the footage yet. The DVX200 did complain about the U1 card, but still formated it just fine. The 200 will split the UHD file at 50 gigs, if you format them in the camera. If I use my computer, it will split at 4 gigs.

Bob
 
if you need to record 4K60P better use UHS-II card, the contacts on them are different to UHS-I cards.

If you just want stable performance at 4K30p most good quality U1 card that have 95mb/s speed should do.

the U1 U3 rating is quite misleading some of the good quality U1 cards can out perform low quality U3 cards.

The same applied to A7R2 and A7S2 when you want to record higher bit rates for 4K
 
Jonny Gross said:
I have Lexar U3 UHS-I 128GB. I had a few problems in dual codec where it just stopped recording suddenly. I was also shooting simultaneous rec in 50p UHD and the cards stopped. It's fine if you're shooting B-Roll, but if it's an event or an ENG situation, you don't want to miss your money shot because of a dinky card. Now I know people have said that it doesn't matter, but if you look at the maximum write speed of your card in MB/s (B&H lists them) and then think about how much leeway your camera needs as a base, constant speed in any given format, you might want to go up to UHS-II. I realised that my cards were enough, but if you push too far and try to record in dual, simul or heavy framerates like 50p, you can wind up with the damn thing stopping. So, better to be safe than sorry, I've ordered a 2 pack from B&H of UHS-II cards.
Click to expand...

I am having this problem a lot. But I am going on a live shoot that i cant have this failing. Did new cards fix this problem for you in uhd 50p?
What cards did you get?
thanx Drengsson
 
striking how low card speeds measure with the Blackmagic Speed test
This is a rate Kingston SDXC U/3 64Gb card
measurement with my iMac inside card reader
DiskSpeedTest.jpg
 
The only cards I have found to be totally reliable are the Sandisk Extreme UHS I U3 128GB cards (V30 or not makes no difference). I have had Lexar cards of the same speed rating fail and UHSII cards are totally unsuitable as the camera doesn't have the necessary extra connectors so that these cards default to 50mb/s.
 
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