I'm a Sandisk guy, never had a failure, never had a problem.....I have an ExtremeIII 1gb, and a standard 256mb, write speed is noticably increased with the extreme, but not all card readers will extract at max speed...
D80 | MB-D80 Grip | Nikkor 50mm f1.8D | Nikkor 85mm f1.8D | Nikkor 18-70mm f 3.5/4.6G ED | Nikkor 70-300mm f 4/5.6G ED | Tamron 90mm f 2.8 Macro | Nikon SB-600
> >A fast card should do 25 to 33 images in 30 seconds. > I'm interested to know the basis of your reason for this. Why should "A fast card should do 25 to 33 images in 30 seconds"? Do you have any form of engineering facts here? What is your basis for testing? Is the device (I assume a camera) capable of writing that many images in that time frame? How does your test device compare with other devices (presumably other cameras) as far as write spped is concerned? 50% of what fail this test? You have made a very broad statement. Could you please provide back up proof.
I am sorry I did not keep records. I just was going to buy a fast Delkin card and had read about this test devised by another Nikonian.
So I had some 256 cards and they were fast. Then I bought some 512's and one did not work well.
I found it was slow. Then I started checking, Sandisks at Costco and returned over half.
Then at my camera club for fun, I checked every card I could get my hands on.
Lexar and Sandisk in about equal quanities - too my surprise they were either fast or slow -- nothing in between. We found the edge code on the Sandisk cards mattered the U** were always slow.
I have not done any testing myself in over a year but I follow the results on Nikonians and nothing seems to have changed. The cards are not consistant regardleess. Lexar and Sandisk are the only two most people test. The others are not very common.
My friend got a new card and it was a plane Sandisk but it behaves like a Ultra II while her other plane one is slow.