Short record time on Sandisk 90mb/s in RAW, is it normal? (5Dmk2)

[PeterKa]

Hi all,

I'm a bit newbie here so don't flame me I recently dig into ML + RAW on my 5Dmk2 and before i was using Sandisk Extreme cards (60mb/s) for h264. I knew its to slow so i bought Sandisk Extreme Pro 90mb/s udma7. I didn't think i will be able to shot continues shots but... i can only shot 12s of RAW footage in max resolution 1880x1058 at 23,976 fps

Is it ok? ML benchmark in movie mode (global draw off) shows average of 50mb/s when the card should be around 80-85 right? Or im missing smth here??? Pls help

[Midphase]

Most of my friends who are shooting with the 5D2 aren't shooting at such a high resolution. Perhaps you might be pushing the envelope a bit too much?

Try a lower resolution, and remember that on that camera, the bottleneck isn't the card but the chip which controls how fast you can write to it.

[ted ramasola]

@ PeterKa

Here is a list of the best that's possible on the mkII using a 1000x CF card shooting at 24P.

The highest possible res to record is at
1880x1058 16:9 = 1049 approx frames (approx 44 seconds)

Highest continuous recording is at
1880 x 940 2:1 = record till your CF card is full (64gig around 15 minutes)

Highest 16:9 continuous recording is at
1728 x 972 = record till your CF card is full (64gig around 15 minutes)

Highest res in crop mode is at
2144 x 1076 = 358 approx frames

near full HD res in crop mode is at
1920 x 1076 = 1223 approc frames

Highest 16:9 continuous recording in crop mode is at
1856 x 1044 = record till your CF card is full (64gig around 15 minutes)

[PeterKa]

So looking at those numbers is what i got on my card is normal or it isn't? 'Cuase well i thought at 90mb/s (my card ix 600x) i will get smth more then 12 sec ( as mentioned above 1000x get 44sec).

Plus as wrote in the 1st post, my card is 90mb/s and benchmark shows something totally different :/

[mageye]

It does sound a little below par .

Are you using the latest nightly build? (as in today)

Under Canon Menu > Quality Make sure the photo mode is set to Small JPG? and turn RAW OFF (this makes a difference  )

Under Magic Lantern > Movie > RAW Video menu:

Turn ON 'Small hacks' under the sub menu

Try 'Card warm-up' from same menu (I have mine set to 128MB)

I hope these measures improve speed a little .

[ted ramasola]

So looking at those numbers is what i got on my card is normal or it isn't? 'Cuase well i thought at 90mb/s (my card ix 600x) i will get smth more then 12 sec ( as mentioned above 1000x get 44sec).

Plus as wrote in the 1st post, my card is 90mb/s and benchmark shows something totally different :/

I guess so. I measured an 800x at that same res and it will get approx 13 sec. So I guess its "almost normal" for your 600X to get 12.

The ML benchmarks is usually different from whats printed on your card label.

[PeterKa]

It does sound a little below par .

Are you using the latest nightly build? (as in today)

Under Canon Menu > Quality Make sure the photo mode is set to Small JPG? and turn RAW OFF (this makes a difference  )

Under Magic Lantern > Movie > RAW Video menu:

Turn ON 'Small hacks' under the sub menu

Try 'Card warm-up' from same menu (I have mine set to 128MB)

I hope these measures improve speed a little .

Hmmm and did what You suggested and... wow weird but it helped a bit!

- in 1880x1054 i got 18sec from 12sec before

- in 1880x940 i got 44sec from about 26sec before

uhm... is it all thx to "small hacks" ? i didn't restart the camera so card warm up didn't run plus i have RAW photo disabled and small JPG enable from start

[ted ramasola]

Hmmm and did what You suggested and... wow weird but it helped a bit!

- in 1880x1054 i got 18sec from 12sec before

- in 1880x940 i got 44sec from about 26sec before

uhm... is it all thx to "small hacks" ? i didn't restart the camera so card warm up didn't run plus i have RAW photo disabled and small JPG enable from start

small hacks helps big. warm up depends on certain cards, you can try it if it will improve, raw photo disabled also helps in raw video.
if you can get continuous 1728 x 972 16:9 you'r good to go since you can easily upscale that to full hd.

[bnvm]

And of course upgrading your card will help too. With the 2 cards I have, I have found that I get roughly 50% of the speed that the card claims as my actual write speed using ML so 90 MB/s = 45 MB/s. With a 1000x card you will be able to get low to mid 70 MB/s which will help a lot. The KomputerBay cards that seem to be the fastest are not all that expensive, the are some of the cheapest cards from what I have seen.