SD Replacing Compact Flash?

CF isn't going anywhere soon. The recently released Canon 20D uses it, as
does the new Maxxum 7D. It'll be around in DSLRs for quite a while.

Mark

"MeepMeep" wrote in message
om...
"Tony Whitaker" wrote in message
link.net...
While it is true that the volume of CF is quite a bit larger than an
SD, meaning that it should always be able to hold more data, the SD
bus protocol looks like it can be faster than CF. This shouldn't be a
surprise because SD is a newer design.

Card testing at www.robgalbraith.com shows that on a Canon 1D mII, the
SD can write RAW files at around 7 MB/sec, whereas the CF can only do
about 4 MB/sec.

But isn't that something that can be fixed on CF cards in the future? I
know in the last year or so, the manufacturers came out with a bunch of
"high speed" CF cards. What's the limiting factor in data transfer speed on
a flash memory card?

"MeepMeep" wrote in message
om...
"Tony Whitaker" wrote in message
link.net...
While it is true that the volume of CF is quite a bit larger than an
SD, meaning that it should always be able to hold more data, the SD
bus protocol looks like it can be faster than CF. This shouldn't be a
surprise because SD is a newer design.

Card testing at www.robgalbraith.com shows that on a Canon 1D mII, the
SD can write RAW files at around 7 MB/sec, whereas the CF can only do
about 4 MB/sec.

But isn't that something that can be fixed on CF cards in the future? I
know in the last year or so, the manufacturers came out with a bunch of
"high speed" CF cards. What's the limiting factor in data transfer speed on
a flash memory card?

Mark B. wrote:
CF isn't going anywhere soon. The recently released Canon 20D uses it, as
does the new Maxxum 7D. It'll be around in DSLRs for quite a while.

Mark


CF is a great format, compact enough for medium to large cameras, large
enough for easy handling, and easy finding if dropped, and with no limit
on the capacity it can handle. I suspect it will be around for a LONG
time yet. However, SD is a good format for smaller devices, and it has
supplanted the CF card in most of these applications.

Mark B. wrote:
CF isn't going anywhere soon. The recently released Canon 20D uses it, as
does the new Maxxum 7D. It'll be around in DSLRs for quite a while.

Mark


CF is a great format, compact enough for medium to large cameras, large
enough for easy handling, and easy finding if dropped, and with no limit
on the capacity it can handle. I suspect it will be around for a LONG
time yet. However, SD is a good format for smaller devices, and it has
supplanted the CF card in most of these applications.

Tony Whitaker wrote:
"MeepMeep" wrote in message
om...

"Tony Whitaker" wrote in message
thlink.net...
While it is true that the volume of CF is quite a bit larger than an
SD, meaning that it should always be able to hold more data, the SD
bus protocol looks like it can be faster than CF. This shouldn't be a
surprise because SD is a newer design.

Card testing at www.robgalbraith.com shows that on a Canon 1D mII, the
SD can write RAW files at around 7 MB/sec, whereas the CF can only do
about 4 MB/sec.


But isn't that something that can be fixed on CF cards in the future? I
know in the last year or so, the manufacturers came out with a bunch of
"high speed" CF cards. What's the limiting factor in data transfer speed on
a flash memory card?


Right now, the speed at which the memory cells can be written.

Tony Whitaker wrote:
"MeepMeep" wrote in message
om...

"Tony Whitaker" wrote in message
thlink.net...
While it is true that the volume of CF is quite a bit larger than an
SD, meaning that it should always be able to hold more data, the SD
bus protocol looks like it can be faster than CF. This shouldn't be a
surprise because SD is a newer design.

Card testing at www.robgalbraith.com shows that on a Canon 1D mII, the
SD can write RAW files at around 7 MB/sec, whereas the CF can only do
about 4 MB/sec.


But isn't that something that can be fixed on CF cards in the future? I
know in the last year or so, the manufacturers came out with a bunch of
"high speed" CF cards. What's the limiting factor in data transfer speed on
a flash memory card?


Right now, the speed at which the memory cells can be written.

Tony Whitaker wrote:
"MeepMeep" wrote in message
om...

"Tony Whitaker" wrote in message
thlink.net...
While it is true that the volume of CF is quite a bit larger than an
SD, meaning that it should always be able to hold more data, the SD
bus protocol looks like it can be faster than CF. This shouldn't be a
surprise because SD is a newer design.

Card testing at www.robgalbraith.com shows that on a Canon 1D mII, the
SD can write RAW files at around 7 MB/sec, whereas the CF can only do
about 4 MB/sec.


But isn't that something that can be fixed on CF cards in the future? I
know in the last year or so, the manufacturers came out with a bunch of
"high speed" CF cards. What's the limiting factor in data transfer speed on
a flash memory card?


Right now, the speed at which the memory cells can be written.

Frankly, I have noticed so many cameras switching to Secure Digital (SD)
cards in place of Compact Flash I'm wondering if Compact Flash is going the
way of Smart Media cards.

I agree with other posters that CF will remain strong for DSLRs, etc
and will probably not go away any time soon.

I also see that compact cameras tend to all be (slowly) moving towards
SD... so if you generally prefer compact cameras SD is hands down the
way to go.

Will Fuji ever get the clue and dump xD??? I don't think they have the
the brand power of Sony to continue to rely on a proprietary card.
They do sell cute little cameras though.

Sony will surely stay with MS and now MS-PRO forever.

On 15 Sep 2004 09:45:14 -0700, (Dave Cobb) wrote:

Will Fuji ever get the clue and dump xD??? I don't think they have the
the brand power of Sony to continue to rely on a proprietary card.
They do sell cute little cameras though.

I'm confused. Are you saying that xD is a Fuji-proprietary card? If so,
how come Olympus also uses it - at least according to
http://www.dpreview.com/reviews/spec...oly_c740uz.asp

--
Stephen Poley