IglooEater said:
Hi! I'm curious- what's your experience with the buffer? The reason I ask is that Bryan Carnathan has reported getting a much deeper buffer than specified by canon. Does that correlate with what you get?
http://www.the-digital-picture.com/News/News-Post.aspx?News=18912
If you do exactly what Bryan describes, then yes. But read what he says carefully:
The lens cap remained on (insuring a black file and the smallest file size)
With the lens cap on I'm getting raw files of 26MB. The general photos I've taken so far range from 29MB right up to 56MB - the 56MB one being in the rain so lots of fine details.
Simplistically extrapolating from his numbers - 36 frames @ 26MB gives a buffer just under 1GB. If your photos happen to come out at 56MB then you'd be down to a buffer depth of 16 or 17 frames with this admittedly simplistic view.
The CF card has a hard limit at 167MB/s, you can't clear the buffer any faster than that. So to some degree the buffer depth depends on what your image contains and the depth, measured in number of shots, will vary.
For actual photos of something other than the inside of a lens cap I'm getting around the 22/23 mark with resulting raw file sizes around 38MB
At a guess, the buffer is somewhere around 400-500MB given how fast you can write the buffer to the card.