My SD card is in my camera, but it keeps telling me card error and I dont know why.

my memory card say it is locked, can u tell me how to unlock it

SD cards have a small micro switch on the side check to make sure your's is open/on.

Here is what I found on my Stylus 6020. I have the same problem. In the card reader, there are about 9 fine wire contacts sticking up that brush against the SD card when inserted. By shinning light into the empty SD slot, I found two contacts in the middle are either pushed all the way down or have broken off thus causing a card read error. Only 7 or the nine contacts are touching the SD Card. I do not have a solution for this problem other than warranty. This camera is fairly new and has incurred no damage.

Maybe it is having trouble with the size of the memory. Memory cards have grown enormously in capacity in the last couple of years, and even relatively new cameras may not be able to cope with the memory size of the newest cards. It is often difficult to find out the maximum capacity a camera will use, as today's memory cards are much larger that those available when the manual for the camera was written.

SD and SDHC cards fit the same slots, but many cameras won't work with the SDHC (high capacity) cards. SDHC is not backwards compatible. If the card you are trying to format is above 2GB, it will be an SDHC card.

You already know about the 'lock' switch on SD cards; did you know it doesnt actually lock the SD card by itself? It merely pushes a switch lever in the reader (in this case, your camera), that in turn tells the electronics to NOT write on the SD card.

So, if your SD cards are indeed working (check on a card reader), it would look like the lever in the camera that senses the position of the lock switch is jammed / bent. If you could pry into the card slot in the camera, and try to shake this lever with a long narrow object (a straightened paper clip, perhaps), that might yield good results.

Alternately, look up 'CHDK' on Google; it is an alternate OS that gives your Canon *lots* of other features. In your case, more importantly, it *requires* the SD card to be locked in use. Dont worry, with CHDK booted in, the camera will store pictures even when it sesnses the card is write-protected. So, it not only solves your problem, it gives you loads of extra features like RAW capability, time laps, remote operation and more, all for free.

Regards,

Anand Dhuru

Have you formatted the card in the camera before trying to use it?

Most new 4GB and larger cards are SDHC cards (look on the card). Although they look exactly the same as a standard SD card, they are not. Unfortunately, there is no way that these cards will work with your camera, as it was designed before the SDHC format came out. As you've dsicovered, 2GB and less are standard SD cards, and will work with your camera.

There were a few standard 4GB cards produced a few years ago, most notably by ADATA (I have one that I use in my A620). Unfortunately, these are rare now, and are somewhat expensive if found on eBay.

The i733 works with SD cards. Your 8GB card is actually an SDHC card. While it fits into the slot, it won't work. You need to go with SD cards, 2GB and smaller.

There is switch on your SD memory card, try to put it on unlock position. If it doesn't solve the problem, you may need to open the camera and check the SD card slot. Refer this solution:
http://www.fixya.com/support/t2234315-its_saying_memory_card_locked_its_not

i have seen this error and i dont know why it does that. you may want to try buying a micro disk setup that fits into a sd adapter that will fit in your camera.

then you can take out the micro disk when full and put it on a usb adapter and plug right into a usb port.

i know this sounds like more work but so far i havent had a lock up on that or error yet. go to tigerdirect.com if you want to see the different adapters for the sd disk and micro disk and usb etc....

maybe this might help