I believe Type 2 are thicker - don't know if there is any power requirement difference.
The advantage of microdrives for me was one of cost. When shooting weddings in raw, I don't have much time to change cards, so was looking for higher capacity. The *istD is relatively slow at writing out raw, so I found that the later model microdrives are just as fast as my Lexar WA 40X professional cards. They are are year or three old now, so perhaps prices are better on the memory now than when I bought them. My biggest gripe about them is the startup time. They take a few seconds to spin up to speed so if you haven't shot for a bit (camera gone to sleep) even though the camera wakes up almost instantaneously, the microdrive is a couple of seconds after that. -- Bruce Saturday, November 11, 2006, 11:13:19 AM, you wrote: SB> What's the deal with Type 1 and Type 2 CF cards? My recollection is that SB> one is somewhat larger in some dimension than the other. If that's the SB> case, is there any problem or caution using one or the other in the istD? SB> Bruce, do you find an advantage using a micro drive over a regular CF card? SB> Shel >> [Original Message] >> From: Bruce Dayton >> I run both a 4 gb and 6 gb microdrive in my *istD without any issues. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net