Re: any card over 60MB/s is overkill, correct?
 

Who knows? Maybe Canon do but why spend money on a card that may or may not be reliable when there are others that are guaranteed to work?

Re: any card over 60MB/s is overkill, correct?
 

Hehe, because the Transcend 400x 32gb and 64gb cards are cheaper, and I am cheap. :)

Re: any card over 60MB/s is overkill, correct?
 

I'm getting Deja Vu here, and thinking back to the days when we were encouraged to buy DV CAM tapes instead of cheap and cheerful DV tapes, and later on HDV tapes when normal ones worked just fine. I already own several high spec Transcend cards and find it hard to believe these will not work fine for slomo.

Has anyone tried the Transcend UDMA cards for high frame rate work?

Re: any card over 60MB/s is overkill, correct?
 

All I've got to say before finishing my morning coffee is that if a person gets a card not on Canon's approved list and then has problems, do report so other people have the benefit of your real-world experience but DON'T complain!

Re: any card over 60MB/s is overkill, correct?
 

So will the camcorder give you a message that says something like "card not accepted?"

Or will it still record, but the footage recorded will be messed up?

On the JVC HM100, if a card isn't class 6, it gives a rejection message right when you insert it.

Re: any card over 60MB/s is overkill, correct?
 

Actually the Lexar cards are reasonably priced. Both the x300 and x600 versions appear to be recommended. No mention of the X400 ones though.

Re: any card over 60MB/s is overkill, correct?
 

I use this card with my 5D MARK II and it works great , I was hoping that this card was going to work on my new XF100 as well but I think it is better not to risk it and buy a recomended card from the CANON LIST

Re: any card over 60MB/s is overkill, correct?
 

The latest firmware update for the Xf100/105 & XF300/305 Version 1.0.1.0 provides:-

Firmware Version 1.0.1.0 incorporates the following:
Support has been added for slow-motion shooting with the following Lexar CF cards –
1. Lexar Professional x600 16GB (LCF16GBCRBJP600)
2. Lexar Professional x600 8GB (LCF8GBCRBJP600)
3. Lexar Professional x300 16GB (LCF16GBCRBJP300)
4. Lexar Professional x300 8GB (LCF8GBERBJP300)
5. Lexar Professional x300 4GB (LCF4GBCRBJP300)

Canon - XF305, XF300, XF105, XF100 Firmware Update Version 1.0.1.0