Nikon D40 Memory Card Error

Actually a 4GB SDHC card should be compatible with an S205, as that camera is new enough to work with SDHC. One thing to try before going through the below linked troubleshooting tips is if you have another card, try it in the camera. If the camera recognizes it, then it's likely that the card you purchased was defective, thus you should return it.

For others reading with similar problems, there are several possible causes for "memory card locked", "memory card error", or "no memory card". The most common is trying to use a 4GB or higher SDHC card with an older camera made before SDHC format came out. Other causes include problems with the tiny slide switch on the side of the card, or the electrical contact switch internal to the camera. The problem may also arise from simple formatting problems if the card has never been formatted in the camera (note that this will also erase the card). Troubleshooting tips for this problem may be found at this link.

Your problem is it's an SD"High Capacity" (SDHC). This type of card came out after camera was designed, and although it looks the same as a standard SD card, its not. Sorry, but there's no way to make that type of card work with your camera. But just go on Amazon, You can purchase a standard 2GB that will work with your camera for about $6 to $7 (total with shipping).
For others reading this with similar problems, there are several possible causes for "memory card locked", "memory card error", or "no memory card". The most common is trying to use a 4GB or higher SDHC card with an older camera made before SDHC format came out. Other causes include problems with the tiny slide switch on the side of the card, or the electrical contact switch internal to the camera. The problem may also arise from simple formatting problems if the card has never been formatted in the camera (note that this will also erase the card). Troubleshooting tips for this problem may be found at this link.

First check make sure the SDHC card is unlocked I'll provide a diagram for that also I just checked your camera's memory capacity and it's only good for a 1 gig SD card which if using an SDHC memory card might go to 1.5 stretch to 2gig maybe but not a 4gig. My first impression is you got to much memory card for the camera. You might be able to go to the Kodak site and download updated firmware to allow the camera to function with the larger card but that's a maybe as well.
Here are the diagrams



And the memory capacity chart for your camera

4GB "SD" cards are almost always actually SDHC (high capacity) cards. SD and SDHC cards fit the same slots, but they are slightly different electrically. Many cameras won't work with SDHC cards. SDHC is not backwards compatible.

So your camera is not able to use the 4GB card, and is ignoring it and using internal memory only. That memory is tiny and won't hold many pictures, and when it is full, the camera cannot work at all. You need to delete the pics in the internal memory and get a memory card your camera can understand (2GB or less).

Yes. The D3100 will work with any SD card up to 2GB in size and any SDHC card up to 32GB in size.

The recommended card for your camera are those SDHC type or 2GB-16 GB SDHC card, try to use at least 2 SDHC card if this failed it means the memory card reader of your camera is already defective. Just in case this will happen try to contact Kodak at 1 800 235 6325 ext 12.

The Z740 supports only MultiMediaCards & SD Memory Cards. 4GB and larger SD cards are usually SDHC (Secure Digital High Capacity) types - and bear the SDHC mark on the label. These cards are not compatible with this camera. Use only MMC and SD cards. SD cards are 2 GB and under - although *some* 4 GB cards are marked as SD too; these cards may or may not work. If you purchase a 4 GB SD (not SDHC) card, make sure that it can be returned if it doesn't work reliably in your camera.

The S4 uses SD cards. Your 4GB card is actually an SDHC card and thus will not work in the S4. You will need to stay with cards 2GB and smaller.

I have the same problem with the card, my cannon camera, and my gateway laptop. From what I've learned in the past ten minutes, the card is SDHC and my devices are not. The card is not able to dumb down and I am returning it to Best Buy. The HC in SDHC is the issue from my best guess. Similar to you cannot play PS3 games on PS2. I hope this helps anyone else.

I assume you mean Sandisk Ultra..and the answer is Yes it will work fine.

A good choice card also..

Just beware that some computers will need the SDHC reader.
For example my SDHC cards can be read in XP without the reader but my Vista machines need the reader.

Good luck and happy shooting :-)