[wingmak]

SanDisk class 4 8GB 儲相速度快過 Transcend class 10 16GB(用在550D連拍)
我今日用550D連拍測試
SanDisk class 4 8GB 及 Transcend class 10 16GB的儲相速度
於1800萬像數及普通壓縮比Jpeg時作連拍
3.5MB左右一張相
SanDisk class 4 8GB可以無限連拍
Transcend class 10 16GB只可以連拍到40幾張左右就慢下來
只有在800萬像數及普通壓縮比Jpeg時作連拍
1.7MB左右一張相
才可以無限連拍

我初時以為我買左張假貨。
明明包裝寫住
Transcend (class 10) 16GB : Read 20MB/Write 16MB
SanDisk (class 4) 8GB : Up to 15MB

於是我用電腦測試
Copy 1 File 1,381,045KB
Transcend (class 10) 16GB
PC to Card :1min24"25sec (Write:16MB/sec)
Card to PC : 1min14"50sec (Read: 18.1MB/sec)

SanDisk (class 4) 8GB
PC to Card :1min56"44sec (Write: 11.6MB/sec)
Card to PC : 1min15"08sec (Read: 18MB/sec)

點解用電腦就正常地Transcend (class 10) 16GB 快過SanDisk (class 4) 8GB？？
但用Canon 550D就反常地SanDisk (class 4) 8GB快過Transcend (class 10) 16GB？？

[lsammy]

你用相機格式化完再試

[cy001]

Trancend class 10 is also slow than SanDisk and Pansanic Class 6. This is the reason why it is cheaper than them. Trancend has "ulitmate version", but the price is very close to SanDisk and Pansanic. This case also happen in Tosbsha. Their Class meaning is only reach the lowerest of this Class requiredment. But SanDisk and Pansonic are reached at the top of this class of range.

[cy001]

The price for indication:

Pansonic 16G Class 10 (Made in Japan) .... HKD 680 (buy at their shop)

[marcowing01]

TRANSEND CLASS 10用相機FORMAT後可以RAW 6張連拍.

[cy001]

i can say this testing is not absolute correct, what is the setting of yr speed of your shutter? I remember i used 7D and SanDisk CF exteme, it also do it not very good at faster shutter speed. if u set the shutter 3 sec per one shot, it is very smooth to save. I think and guess, yr result are mainly used its internal cache, after it fully used, u will feel the saving speed. I used in 7D with CF extreme is also very slow. I don't beleive SD card will perform better than CF card. Faster speed of CF is nearly 45mb/s.

[wingmak]

點解用電腦就正常地Transcend (class 10) 16GB 快過SanDisk (class 4) 8GB？？
但用Canon 550D就反常地SanDisk (class 4) 8GB快過Transcend (class 10) 16GB？？

[cy001]

this is compatable problem, i think it just like burning DVD (16X), some disk is very steable run at 16X, something cannot. Some brand need to sell the product at lower price, maybe some parts is not good as SanDisk or Pansonic. If u use Transcend reader will get more better proformance, i tested before. Anyway, it will not affect u too much, forget it.

[wingmak]

唔該晒名位C兄

[koyi321]

我都係用緊550D，咁即係點？ class10都唔一定快過class4？

[cy001]

我剛剛試過Toshiba class 10 (行貨),跟 Panasonic 的Class 6 差不多只快0.5 - 1m/s 左右,在notebook 內置的card reader 又快過Sandisk USB card reader 都有20%左右,所以你想 stable 都是買番 Sandisk, Panasonic, 比較好, 但我剛買了Toshiba 16G Class 10, 速度不錯,不知耐用如何了. 最怕影了很多相在咭內才死咭. 在街上好像有假咭,小心.