# What is CF High speed

Discussion in 'Digital Photography' started by Henriette og Michael, Dec 13, 2003.

1. ### Henriette og MichaelGuest

Hi
What are the difinition on "high speed" and meyby "low speed"? There must
be some kind of standard!

Michael

Henriette og Michael, Dec 13, 2003

2. ### Joseph MeehanGuest

Same as large and small. They are not specific. I can remember when
160 ASA was FAST and 25 ASA was medium.

--
Joseph E. Meehan

26 + 6 = 1 It's Irish Math

"Henriette og Michael" <> wrote in message
news:brfpag\$1evk\$...
> Hi
> What are the difinition on "high speed" and meyby "low speed"? There must
> be some kind of standard!
>
>
> Michael
>
>

Joseph Meehan, Dec 13, 2003

3. ### Bill HiltonGuest

>From: "Henriette og Michael"

>What are the difinition on "high speed" and meyby "low speed"? There must
>be some kind of standard!

Look for the "X" rating, as in 4x or 16x or 32x. They've borrowed this metric
from CDs, with 1x => 150 KB/sec transfer rate, so the higher the X the faster
the transfer rate. "high speed" and "low speed" are just marketing terms and
mean nothing without an agreed upon standard of measurement.

Note that the "X" ratings are some idealized figure that you just don't reach
in real life due to overhead, but still it will give you an idea of the
relative speed of two different flashes.

Here's some good info on CF speeds at this site ...

http://www.dpreview.com/articles/mediacompare/ ... note the difference between
read and write speeds and the difference between the rated speed and the actual
speed.

Bill

Bill Hilton, Dec 14, 2003
4. ### BillGuest

CF speed is Compact Flash read/write speed.......not ISO.
CF of 16x or more is generally considered high speed.

Bill

"Joseph Meehan" <> wrote in message
news:_iLCb.17812\$...
> Same as large and small. They are not specific. I can remember when
> 160 ASA was FAST and 25 ASA was medium.
>
> --
> Joseph E. Meehan
>
> 26 + 6 = 1 It's Irish Math
>
>
> "Henriette og Michael" <> wrote in message
> news:brfpag\$1evk\$...
> > Hi
> > What are the difinition on "high speed" and meyby "low speed"? There

must
> > be some kind of standard!
> >
> >
> > Michael
> >
> >

>
>

Bill, Dec 14, 2003