LOL ... Performance the same as and half the price as the Sandisk Ultra II is really enough advantage for me. ;-)
Just to be sure, I tested download speed again. Sandisk ImageMate 12- in-1 reader, Power Mac G5 tower USB 2, checking 'disk activity' with the Activity Monitor application.... On a full card with varied mix of JPEG and RAW files, - Transcend 150x - Read speed varies from 7.9 to 8.9 [EMAIL PROTECTED] - Sandisk Ultra II (60x) - Read speed varies from 7.2 to 7.6 [EMAIL PROTECTED] Average 8.4 vs 7.4 [EMAIL PROTECTED] means average performance gain of 13.5%. In real world terms, this means 3 min, 50 seconds to transfer a full 2G 150x card vs 4 min, 30 seconds to transfer a full 2G Ultra II card, in round numbers. Timed out with a sweep second hand wristwatch, the reality is pretty close to the calculation. That's a useful if not earth shattering improvement. From an academic point of view, I'd be interested to know how fast your system can download from these cards and how you are getting that measurement. :-) Godfrey On Jul 14, 2006, at 1:47 AM, Shel Belinkoff wrote: > Thanks for doing all this. Even though there seems not to be much > of an in > camera advantage to using a card faster than about 80X. I think I'm > going > to get the 150X Transcend card anyway. The price/capacity ratio is > too > good to pass up, the faster downloading may be helpful (I ~think~ > my system > was a little faster than yours even with the slower card 9mbs, > iirc), so > it'll be interesting to see what it'll do with a card that's rated > almost > twice as fast, plus the newer cameras (Pentax or other brands) may > be able > to take better advantage of the faster cards, as might subsequent card > readers. > > >> [Original Message] >> From: Godfrey DiGiorgi > >> Igor, >> >> Your question led me to doubt my memory of the last test I did with >> the Ultra II SD card so I ran the test a second time with the Sandisk >> Ultra II card, 60x nominal speed, for both RAW and JPEG *** and >> updated the page with these additional results and corresponding >> QuickTime movies. >> >> http://homepage.mac.com/godders/Pentax-DS-150x-timing/ >> >> There is no measured improvement on RAW capture performance. The >> improvement on JPEG *** captures going to the Transcend 150x card is >> a 3 frames in 60 seconds, about 3.4% total improvement. >> >> Not a lot ... I retract the "substantial" judgement. Amusingly, the >> price of Transcend 150x 2G SD cards is barely more than half the >> price of Sandisk Ultra II 2x SD cards. >> >> This justifies my prior feelings: that there is very little benefit >> to in-camera performance with a card faster than the Sandisk Ultra II >> for the *ist DS body. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
