How can I tell if SD card is genuine?

Hi there

I just bought a SanDisk Ultra II 1gb card for very little money, how
can I be sure it is genuine? I hear there are a lot of fakes around.

cheers in advance
ed

 

Some of them are so good you probably never will, fill it up to make sure
you can use the full card, if it works then just use it as if it was a real
one.

 

Some of them are so good you probably never will, fill it up to make sure

Cheers
It claims to have a fast read/write speed, so how can i tell if it is
performing up to speed? Is there a set time for a 10meg file to upload
to a pc, for example

 

If you look for a thread late last week on fake 2Gig cards there was some
links to some info.

The Ultra cards are supposed to do 10Mbps. Do you have some other cards to
compare?

 

I'l have a look for that thread, I only just got the camera and it
comes with a bog standard 16 meg card. I only just came across this
group - thanks for your help

Ed

 

Card speed isn't everything. You can't read faster than your card
reader, so if you card reader is slow even a genuine card will be slow.

 

Very true. All I really care about is getting a large number of
files/photos on the card and not running the risk of the card getting
corrupted somehow and refusing to be read. This happened with my first
digital camera, a Kodak. They replaced it but the new one suffers
dreadful battery life - perhaps 10 pictures if you use the flash and
preview screen. The new one is a Canon powershot A530

How many photos should I expect to get on a 1gb card with camera set at
5mp?

 

Depending on the amount of compression the camera uses it could be anythign
from 800-1000 pictures.
I have a 4mp camera with a 1gb SD card and it has around 1000 pictures.

 

It's not simply a matter of "compression."

The number of shots that will fit on a given sized card vary greatly
depending on a number of things:

* Resolution being shot
* MPs
* Format(s) being saved.

For example, I shoot at 2000 x 3000 at 6.1mp in Raw+Fine JPG. That means
I get roughly 80 shoots per 1gb card.

The bottom line is that the OP needs to go "play" with his camera at
differing settings and find out what the various configs will yield.

 

The A95 which is 5mp gets around 90 on a 256mb card using superfine and
max resolution. I imagine your's would be same so you should expect
around 360. Double this if you drop down to fine and I've never been
able to see any difference between fine and superfine. I shoot at
superfine because I rarely fill the card except maybe on vacation.
Dave Cohen

 

You can go to Sandisk.com and register your purchase...a phony serial number
should be kicked out. You definitely know for sure when a rebate is
involved.

George

 

Or read the camera's manual. They usually have tables showing how
many shots can be made at different settings for several different
card sizes. The same manual is used for the A530/A540, and it shows
values for three card sizes: 16MB (included with the camera),
SDC-128M and SDC-512MSH. The number of pictures that the A530 can
save to a 1GB card should be roughly double the number given for the
512MB SD card. The manual lists values for three different
compression ratios, and for these resolutions: Large, Middle(1),
Middle(2), Small, Postcard Date Imprint Mode, and Widescreen. For
the Large size (2592 x 1944 pixels), a 512 MB card can hold an
estimated 671, 339 or 190 images, depending on whether the Normal,
Fine or Superfine compression setting is used, so a 1GB card would
be able to hold approximately 380 to 1342 Large images.

 

If it was really cheap, it is a fake.