Sd card Can I put a 4GB sd card in the canon powershot SD500? I have tried and it says memory card problem.

The SD200 works with SD cards. Your 4GB card is actually an SDHC card. While it fits into the slot, it is electronically incompatible and will not work in this camera. You need to use SD cards, 2GB and smaller.

According to the specs on Canon's web site, the IXUS 700 works with SD cards, not SDHC cards. SD cards are limited to 2GB in size (there are rare 4GB SD cards, but they tend not to work in SD devices).

Of course, it's your call as to how definitive any manufacturer's web site touting their product might be.

Maybe you could try to format the card in the camera. If that doesn't work, try formatting it in the computer. (The card alone, not the camera connected to the computer) Otherwise I think it's broken. Do you use a micro/mini SD adapter? If the contact is bad, it may tell you "Memory card error" and "card locked" at the same time. Check the contact.

Sorry, but your camera was designed before the 4GB SDHC card came out. Although they look exactly the same as a standard SD card, they are not. Your camera can only use standard SD cards (2GB or less).

I've come across many people who say their card isn't locked only to find that the slide switch on the side of the card is indeed in the locked position. Check yours.

The ixus 700 is only specified to be compatible with SD memory cards (and MMC cards). The protocol for SD cards only covers up to 2MB. Cards of higher capacity are the SDHC (high capacity) protocol, but this protocol did not exist when the ixus 700 was introduced. As far as I can tell, there is no way to upgrade to be compatible with the newer protocol.

The IXUS 700 works with SD cards, 2GB and smaller. It will not work with higher-capacity SDHC cards. You need to use SD cards, 2GB and smaller.

The IXUS 700 is called the SD500 in some parts of the world. You may download the SD500 manual and more from here.

I understand that it takes a maximum of 2GB. Still loads of photo/video capability. Don't make the mistake I did of buying a 4GB SDHC card for it. It won't take it.

I would think that as long is it is a sd memory card then it would be compatible since the camera uses the sd card and the 4gb is for photo storrage

Sorry, no. SDHC cards are electronically different than SD cards and will not work in devices not originally designed to accept them. This is a hardware difference and cannot be changed by firmware.