04-19-2019 10:17 AM
I think 40D has around 11MB/s. Any modern CF card should be fast enough.
04-19-2019 11:14 AM
"What's the fastest & largest compact flash card ..."
The best CF card for a 40D is whatever the Canon manual recommends. Pushing the limits can cause problems, Use the CF cards Canon recommends.
04-19-2019 03:39 PM
Unfortunately, it doesn't appear to say in the manual. That's why I'm hoping to get input from those in the know here on the forum. (I've been using a SanDisk Extreme III, 8Gig, 30MB/second. But, I'd like to go faster if not bigger... Thanks