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32 GB SD card is coming!



 
 
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  #11  
Old January 14th 08, 03:10 AM posted to rec.photo.digital,uk.rec.photo.misc,rec.photo.equipment.misc
ray
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Posts: 2,278
Default 32 GB SD card is coming!

On Sun, 13 Jan 2008 07:56:55 -0800, aniramca wrote:

Toshiba announced it in August 2007 last year and they indicated that
it will be ready for January 2008. Panasonic has just introduced it
recently for market use in the latest CES convention. It heard that it
costs about $700 in Japan.


Considering that currently 1gb and 2gb cards are available for $10/gb or
less, I'd have expected it to be around $300.

Some questions to ponder:

1. I wonder about a physical limit in storage for the current size of
an SD card. How far do you thing that they can squeeze in the amount
of memory in that size of card? Could it become a 50, 100, 200 GB SD
card in the future. Why do they multiply in the order of
1,2,4,8,16,32, etc. Why not in nice number like 5, 10, 20, 30, 40, 50
GB, etc (metric)?


What's unnice about powers of two?


2. On the back of my regular SD card, there are approx. 9 contact
areas which connect into the terminal. Are all those 9 contacts
currently utilized for a typical usage in a digital camera? Or perhaps
that they only use 2-3 contacts and the others are just reserves for
future use? I noticed similar thing for a telephone jack. There are
those phone cables with only 2 connection wires inside (cheaper), and
there are with more wires (which is perhaps capable for faster
connection or other accessories in a phone - just guessing). Is there
a technical discussion in the internet about these contacts and/or the
details inside an SD card?

3. They said about 32GB SD card. What about the Compact Flash card?
What is the largest size available currently for CF? Is CF, xD and
Sony stick will eventually be abandoned in favour of SD cards? (just
like the wars of betamax vs VHS, and recently between blue ray and HD
DVD). I believe that SD card was pioneered by Toshiba.

4. For an average usage in a digital camera, how useful is a 32 GB
card? Would you prefer to carry 4x8 GB SD card or one 32GB card? Is
an 8GB card more than enough for a digital camera? Is the increase of
GB in storage will be matched with higher and higher MP cameras? Will
the future commercial digital cameras in the market ever reach, say 32
or 64 MP cameras? I assume current RAW files are now about the size of
25MB each. Do professional cameras produce larger size RAW files? I
know that there are 30 MP or perhaps even more MP in current
professional cameras ( 6x4.5 of 6x7 size cameras).

5. Is the new 32 GB SD card compatible for all current digital
cameras, regardless of features and prices? It was mentioned
something about High density SDHC usage, and I wonder if my cheap $100
camera, or my 4 years old camera (3MP) can handle it. Or is this for
high end cost, latest model, and high MP cameras' usage only?

Thanks for the input and discussion


If your cheap $100 camera is limited to FAT16, then it won't handle
anything over 2gb (though the potential is there for 4gb).

  #12  
Old January 14th 08, 08:00 AM posted to rec.photo.digital,uk.rec.photo.misc,rec.photo.equipment.misc
ASAAR
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Posts: 6,057
Default 32 GB SD card is coming!

On Sun, 13 Jan 2008 22:02:40 GMT, Steve wrote:

With SD using serial data transfer, it may be a point in favor of
CF cards, which should then have the potential to have a much
greater data transfer rate. For me though, SD is fast enough. But


Serial data transfer has much higher potential data rates. I can get
into the technical reasons why if you want. But if you feel like
doing your own research, just look up why SATA is faster than PATA.


Though it might be interesting, it's not worth the effort right
now, for reasons mentioned here not too long ago. I assume it has
something to do with the serial stream zipping along as fast as
possible (with possibly a clock signal), vs. parallel data having to
settle and remain stable long enough to be sampled. Do you know
whether SD (or SDHC) serial rates are high enough to exceed CF data
rates? From what I've read of tests performed within the last year
or so, Sandisk Extreme IV CF cards were the fastest, although these
had to use compatible Sandisk readers to achieve the fastest rates.

  #13  
Old January 14th 08, 03:34 PM posted to rec.photo.digital,uk.rec.photo.misc,rec.photo.equipment.misc
Stephen Harris
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Posts: 23
Default 32 GB SD card is coming!

ray wrote:
On Sun, 13 Jan 2008 07:56:55 -0800, aniramca wrote:

Toshiba announced it in August 2007 last year and they indicated that
it will be ready for January 2008. Panasonic has just introduced it
recently for market use in the latest CES convention. It heard that it
costs about $700 in Japan.


Considering that currently 1gb and 2gb cards are available for $10/gb or
less, I'd have expected it to be around $300.


It doesn't work that way. Circuit City, a large electronic chain store
in the USA sells 1gb Sandisk SD for $15 and 2gb for $20. OTOH, Fry's,
another big chain store had a 500gig hard drive on sale for $99. Two
500 gig drives equal a terabyte drive, but those sell for around $400.

http://www.tigerdirect.com/applicati...MP =KNC-GOOGL

Transcend 1GB Secure Digital Card = $14.99 I see some at Amazon.com $10

Transcend 2GB Secure Digital Card = $19.99

Transcend 4GB Secure Digital Card = $29.99

Here you are paying $5 for every gig over 1 gig
but $15 for the original 1 gig SD card. State of
the art is never proportional to the established
technology for instance 32gig SD or 1TB hard drive.

Older technology gets more expensive because of less
demand. A new 40gig hard drive costs nearly the same
as the currently popular 160gig. Same way with older
style memory compared to the newer faster memory.
  #14  
Old January 14th 08, 08:47 PM posted to rec.photo.digital,uk.rec.photo.misc,rec.photo.equipment.misc
Woody
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Posts: 4
Default 32 GB SD card is coming!

"Stephen Harris" wrote in message
...
ray wrote:
On Sun, 13 Jan 2008 07:56:55 -0800, aniramca wrote:

Toshiba announced it in August 2007 last year and they indicated
that
it will be ready for January 2008. Panasonic has just introduced it
recently for market use in the latest CES convention. It heard that
it
costs about $700 in Japan.


Considering that currently 1gb and 2gb cards are available for $10/gb
or
less, I'd have expected it to be around $300.


It doesn't work that way. Circuit City, a large electronic chain store
in the USA sells 1gb Sandisk SD for $15 and 2gb for $20. OTOH, Fry's,
another big chain store had a 500gig hard drive on sale for $99. Two
500 gig drives equal a terabyte drive, but those sell for around $400.

http://www.tigerdirect.com/applicati...MP =KNC-GOOGL

Transcend 1GB Secure Digital Card = $14.99 I see some at Amazon.com
$10

Transcend 2GB Secure Digital Card = $19.99

Transcend 4GB Secure Digital Card = $29.99

Here you are paying $5 for every gig over 1 gig
but $15 for the original 1 gig SD card. State of
the art is never proportional to the established
technology for instance 32gig SD or 1TB hard drive.

Older technology gets more expensive because of less
demand. A new 40gig hard drive costs nearly the same
as the currently popular 160gig. Same way with older
style memory compared to the newer faster memory.




For once we can beat the US hands down.

1Gb Sandisk SD cards £6.99 (or a scratch under $14) in my local (UK)
supermarket - not even a specialist.

From a specialist (albeit in the Channel Islands where there is no tax)
unbranded 1Gb at £3.29 or about $6.60, or Dane-Elec (which are Toshiba -
and it is printed on the back) at £4.49 or about $9.


--
Woody

harrogate three at ntlworld dot com


  #15  
Old January 15th 08, 01:27 AM posted to rec.photo.digital,uk.rec.photo.misc,rec.photo.equipment.misc
Steve[_12_]
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Posts: 440
Default 32 GB SD card is coming!

On Mon, 14 Jan 2008 02:00:33 -0500, ASAAR wrote:

On Sun, 13 Jan 2008 22:02:40 GMT, Steve wrote:

With SD using serial data transfer, it may be a point in favor of
CF cards, which should then have the potential to have a much
greater data transfer rate. For me though, SD is fast enough. But


Serial data transfer has much higher potential data rates. I can get
into the technical reasons why if you want. But if you feel like
doing your own research, just look up why SATA is faster than PATA.


Though it might be interesting, it's not worth the effort right
now, for reasons mentioned here not too long ago. I assume it has
something to do with the serial stream zipping along as fast as
possible (with possibly a clock signal), vs. parallel data having to
settle and remain stable long enough to be sampled. Do you know


Pretty much right. Signal paths for the data lines, switch times for
the digital circuits, etc., all become very critical as parallel rates
are pushed up. Circuit board layout is complicated to keep all the
data lines the same length for the entire path from controller to
controller. None of that is critical for serial. The only thing
critical for serial is standard high frequency design practices.

whether SD (or SDHC) serial rates are high enough to exceed CF data
rates? From what I've read of tests performed within the last year
or so, Sandisk Extreme IV CF cards were the fastest, although these
had to use compatible Sandisk readers to achieve the fastest rates.


For both current CF and SD real-world data transfer, the interface
speed is not the limiting factor.

CF+ 2.0 is 16MB/s, 3.0 is 66MB/s and CF+ 4.0 interface is 133MB/s.

SD/MMC interface is a bit more complicated since it can operate as a 1
bit serial, or in 4 or 8 bit modes. In 1 bit serial, max rate for SD
is 6.25MB/s, MMC+ is 6.5MB/s. SD in 4 bit mode is 25MB/s. MMC+ in 4
or 8 bit modes is 26MB/s or 52MB/s.

The reason SD seems so much slower in 1 bit mode than CF is because SD
uses a slow serial clock speed of 50MHz max, and a lot of hardware
only supports 25MHz. SD could always bump up the clock rates if
faster flash memory made the interface the choke point. They'll have
to do that if they want to go much faster than the "133x" memory
speeds that are becoming common today.

CF is pretty close to it's practical limit at 133MB/s. But unlike
current SD, that should be fast enough for a long time.

Steve
  #18  
Old January 15th 08, 08:08 AM posted to rec.photo.digital,uk.rec.photo.misc,rec.photo.equipment.misc
Alfred Molon[_4_]
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Posts: 2,591
Default 32 GB SD card is coming!

BTW only 6MB/s write speed sustained according to dpreview, which is
quite slow these days.
--

Alfred Molon
------------------------------
Olympus 50X0, 8080, E3X0, E4X0, E5X0 and E3 forum at
http://tech.groups.yahoo.com/group/MyOlympus/
http://myolympus.org/ photo sharing site
  #19  
Old January 15th 08, 09:06 AM posted to rec.photo.digital,uk.rec.photo.misc,rec.photo.equipment.misc
N[_3_]
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Posts: 128
Default 32 GB SD card is coming!

"sonsdad" wrote in message
news
Hi
Without doubt the smaller cards are safer, consider the pain if a 32gb
card goes down after shooting a wedding



It's not the capacity of the card in bytes that matters, it's the number of
photos on the card. As the photo files get larger the capacity has to
increase. Imagine if we still had 8MB cards?

  #20  
Old January 16th 08, 01:07 AM posted to rec.photo.digital,uk.rec.photo.misc,rec.photo.equipment.misc
ASAAR
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Posts: 6,057
Default 32 GB SD card is coming!

On Tue, 15 Jan 2008 00:27:42 GMT, Steve wrote:

For both current CF and SD real-world data transfer, the interface
speed is not the limiting factor . . .


Thanks for the info!

 




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