filofari said:
Erm.. you mean 2 years ago SD is more expensive, slower and less reliable? Check out this thread
http://forums.clubsnap.org/showthread.php?t=209492 dude. SD is cheaper and faster now and makes it easier for people who are using prosumer/consumer cameras to upgrade as they should have a good stash of SDs already.
undeniable fact is that SD has limited real estate on its small physical size. Thus future expansion in size might be limited. Whereas CF being physically bigger can take in larger chunks of silicon to give you bigger storage capacity, basically theory goes whatever that can fit into SD, CF can fit more of it. With the fight for bigger megapixels to feed the more-is-better consumers each photos will now be bigger than ever.
Furthermore, manufacturers of SD memory cards and host adapters have to pay royalties and the cost is passed onto consumers no doubt. This was why SD cards were expensive from the start. MMC on the other hand is open standard (open source = free).
SD card: currently highest capacity 4gb. 32GB 20mb/s (150x) by end 2007 (20mb/s unsure if burst or sustained) SD data bus is still currently sticking to it's 25MHz clock and data rate cannot increase if the clock speed is not increased. Have not heard of any upgrades planned, probably because it's a closed door format.
MMC+: same capacity roadmap as SD but speed up to 53MB/s (353X) but needs phsyical change in connectors to support these newer MMC+ speeds. Also operate with lower voltages therefore conserving battery power. the "open source" version of SD, SD came from MMC anyway...
CF cards: 16GB already out for industrial market since end 2004,
currently under development up to sustained 133MB/s (886X) (not 133X which is only 20mb/s) Some R&D houses have received test samples for product support development.
The 1D2 has SD slots in addition to CF slots. It was meant for photogs to save the files into 2 different storage mediums at one go in case 1 card dies. It is a back up system and did not mean the the 1D only accepts SD cards.
If D80 with the rumoured SD slot supports MMC+ as well then :thumbsup: I'll give it a 2nd look. Else SD is just so... :think: :dunno: I rather compare CF based bodies like D70s vs 350D