The pin / socket arrangement on CF cards violates rule 101 of connector design.
Sockets go on the power side, pins on the non powered side.
It was designed by a total klutz.
Given the evident problems, why do gearheads always want Dual CF slots in their cameras?
I know CF cards can have higher speed ratings, but does this actually show up in the use of the camera?
I've got a mix of CF and SD for various camera's and I don't really see an advantage to the CF cards.
Yes, it can absolutely show up in the use of the camera. More generally if you use the burst mode, especially like sports and I think birders often will. According to Rob Galbraith's amazing table
, with my 5d3 if I have the Lexar 1000x 32GB CF card in, I'll get around 73 shots in 30 seconds. With my Transcend 400x 32GB card (he only lists the 16GB card), I get around 36 shots in that same 30 seconds. HUGE difference. Especially if I shoot for 2-3 seconds, pause, shoot for 2-3 seconds more, pause. Using that method, I might get my high speed burst all the time, rather than hitting the part where it has to slow down significantly.
Now, I don't particularly need it all that often, so I haven't spent the money to get the Lexar 1000x cards (*drool*). But for example, if you have dual CF slots, such as on the 1DX, you can have 2 separate CF cards with identical speed ratings and have it write to both cards. The odds of both cards failing are pretty darn low! Or, if you want super high speed, you can have it write the the cards for every other shot (I think the 1DX can do that). That'll let you go even longer in burst mode before it'd have to slow down. If ever.