What Thibouille said. Notice that you specified maximum read and write speeds for the Transcend 150x and a minimum write speed for the SDHC card.
The reason they had to bring out SDHC was to accommodate ambiguities in the SecureDigital hardware spec which made it difficult to implement a card with a capacity greater than 2G bytes and guarantee device compatibility. It's just taken a while for the vendors to ramp production on the new spec cards with high performance capabilities ... they sell many more lower capacity/lower performance cards, I suspect. Now that the Extreme III cards are available in SDHC, I'm confident that many more will follow and prices will drop to suit the volumes. Godfrey On Mar 27, 2007, at 1:21 PM, Thibouille wrote: > Peter, class 6 means 6MB/s minimum. > There's no class faster than class6. An hypthetical card at 80MB/s > would still be labeled class6, as for current specifications. > > 2007/3/27, Peter Fairweather <[EMAIL PROTECTED]>: >> This whole SDHC issue confuses me. At the moment I use a Transcend >> 2Gb >> 150x card on my DS. Although the camera doesn't use all the speed, >> the >> card reader does when downloading. I am now thinking of moving to >> SDHC >> and 4gb for when I get the K10d or start shooting more RAW. This is >> the choice in the UK from a reputable dealer >> >> Transcend Secure Digital/SD Card >> 4GB Card (150x) >> >> Up to 13.4MB/sec. write rate. >> Up to 18.7MB/sec. read rate. >> >> OR >> >> Transcend High Capacity Secure Digital/SD Card (SDHC) >> 4GB Card (Class 6) >> >> Speed class 6 (>= 6MB/sec writing), >> >> They are about the same price but the SDHC one appears to be a lot >> slower. >> >> Is SDHC an engineering breakthrough or a marketing breakthrough >> whereby slower cards with much higher profit margins can be sold to >> the gullible punter? >> >> -- >> PDML Pentax-Discuss Mail List >> [email protected] >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> > > > -- > Thibault Massart aka Thibouille > ---------------------- > K10D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
