How good does my SD card have to be? (Canon 650d)

Started Feb 6, 2013 | Questions thread
R2D2 Forum Pro • Posts: 17,013
Re: That's bad info...

Illegal Mexican wrote:

R2D2 wrote:

SanDisk rates their 45 MB/s Extreme cards as up to 45 MB/s Read and Write.

My 45 MB/s Extreme writes at about 35 MB/s in my T4i. My 95 MB/s Extreme Pro writes at about 40 MB/s.

I tried a 20 MB/s Ultra in my T4i and it was a DOG compared to these cards. My camera felt very sluggish.

Yeah, up to. They picked that wording for a reason. They're not lying because the read speed does go up to 45, but not the write, especially not in the T4i. And we weren't talking about the 20 MB/sec Ultra cards but the 30 MB/sec ones.

Yes, the only write speeds that are important here are the ones that have been measured in the T4i itself.  My results are posted above (35 MB/s and 40 MB/s).  You are welcome to post your own.  In fact, that would actually be helpful.


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