Rookie Question on CF Card Write Speed Bottleneck

[mrblakeney]

Hey Guys,

Forgive me if this has been asked before (checked the stickies & searched to no avail), but I'm about to pull the trigger on a couple of CF cards for my newly-purchased 50D. From what I understand, it's got a max write speed of 70MB/S. Does that mean it won't make a difference if I shoot to a 1066x card or a SanDisk 120mb/s card? This is the one I'm thinking of buying, but I want to make sure it's up to shooting RAW.

If anybody has any other recommendations, I'm all ears, too.

Thanks!

-MrBlakeney

[Walter Schulz]

I wouldn't buy this one. In benchmarks 50D is able to write 89 MByte/s.
http://magiclantern.fm/forum/index.php?topic=9852.msg117172#msg117172

[Flocksock]

I got one of these and they works perfect.
SanDisk Extreme Pro CompactFlash 64GB  (160MB/s)

Max resolution on a 50D is 1568 x 882 (16:9)
and the camera (ML Menu) say it need 57MB/sec at 25 fps.

In the link they guy wrote:
"The 128gb 1050x works great for me. I can easily get continuous 1:1 no crop or 1920*800"

but i don't think 1920 pixel is possible on a 50D.
Am i wrong?
120 MB/s maybe is enough. But i would spend a bit more and buy 160 MB.
So you are safe. And i think a faster card also react faster. If you hit record and stop.
Its good when the card ist faster than what you needed.
With 64 GB, recording 1568 x 882 you can record around 20 minutes in raw,
and scale it up to 1920 x 1080.

[Walter Schulz]

Linked card will max out - according to SanDisk - at about 85 MByte/s in write mode.
The cam is able to do 1080p in crop mode.

[Greg]

SanDisk Extreme 120MB/s 32GB - 60MB/s write speed in camera.