Flash Card Menagerie

[speculatrix]

http://www.cieonline.co.uk/cie2/articlen.a...86&id=15807

I found it quite an interesting article, in particular how SDHC differs from SD, and the differences between the mini SD and MMC cards.

See below for a scan of the table missing from the article.

 [ Invalid Attachment ]  - saved a copy of the article in case original site remove it.

[Da_Blitz]

the CF part was intresting, funny thing is i have never seen one that fast (66MB/s) and i was under the impresion you can only do that in IDE emulation mode

also you can get them in capacities up to 20GB (yes thats flash not microdrives)

not sure how acurate the mmc bit is, i hear that the older (1 to 3) specs are free, and very few hardware devices support number 4 (thank you SD )

i have yet to seee a micrommc card in a device or a device that uses them, all i have seen is microSD

anyway great article, we should add that to a wiki somwhere

[speculatrix]

one of the things the online article doesn';t show is a table comparing the devices, and also listing the cost of membership of the various organisations - it's US$25000 per year to join! Yes, really!

I'll see if I can scan the table and put it online - it's not on the referenced cypress semi website.

[speculatrix]

Here's a scan of the table; sorry about the quality. My scanner had an accident and it jams, so it's not easy to do lots of scans in order to pick a good one!

 [ Invalid Attachment ]

[Ling]

Speculatrix, you are just showing off because you can post

[speculatrix]

Not quite Z related, but interesting in this context. I just bought a Canon A710IS, which has been sold for less than 6 months.

Seems that tho' the camera is SDHC compatible, it doesn't work with old standard 4GB SD cards. It gives every appearance of doing so, but doesn't actually write anything to the card!

I upgraded from an "ancient" (6 years old) Olympus C-3040Z (which took 128MB smartmedia cards, nice photos, slow to work) to the Canon A710IS (bargain off ebay!).

The Canon comes with a 16MB card, pointless since at highest quality image files are 3MB each! So, I slotted in my non-HC 4GB SD card, and took a few pictures to test it (didn't even bother to unwrap the 16MB card, seemed a bit pointless!).

Pictures looked great on camera, plugged camera into Linux PC to transfer pix, no pictures! Hmm. Took more pix, put memory card into PC's usb card reader, no pictures. Put test files onto card on PC, plugged into camera, turned on, took pix, back into PC.... etc... repartitioned card into a 1.9GB fat32 partition, still no pix stored. Very odd. Worried that camera was broken, plugged in my Lexar 1Gb card (previously in use in Z, now in my Palm T3), and it worked fine!

So, moral of the story, even Canon can't get compatibility 100%