Reccommended Card Memory

Rocket

Rocket

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Tony
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Just wondering if some one can explain the difference in the various CF cards availible.
I am currently using SandDisk Extreme III 4 GB CF, in two of my cameras and have used much the same over the past few yrs, but was wondering if i should upgrade and if i gain anything by doing so.
 
There can be a benefit to using faster cards if the write speed of your camera can utilise them. If not then it is a waste of money.

As an example this is what I found recently on my Canon when I tested different speed cards.

Sandisk Extreme Pro16GB 160MB/S CF card.

In my 5D MkIII the results were as follows.

All Sandisk 16 GB CF cards

60MB/S Max RAW 13. Frames before FPS slowed 17. Time to clear buffer to Max RAW of 13 again 5.5 secs.
90MB/S Max RAW 13. Frames before FPS slowed 21. Time to clear buffer to max RAAW of 13 again 4.0 secs.
160MB/S Max RAW 13. Frames before FPS slowed 25. Time to clear buffer to max RAW of 13 again 3.25 secs.

Im not suggesting that you would see they same results as the 5D3 is able to utillise UDMA 7 speed cards.

You need to find out what class of card your camera can use and then take it from there.
 
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