The Cannon Powershot PC1249 is an older camera and Canon no longer provides an online user guide for this particular camera. Canon does still provide a user guide for the newer Powershot SD870. Both of these cameras take the same battery. To answer your question, the SD870 supports a micro SD card up to 32 gig. Now in my own thinking, and I have Canon cameras, I am quite confident to say that the older PC1249 will also utilize the 32 gig micro SD card you are asking about. I highly suspect when the PC1249 was new it likely used a 2 gig micro SD card. which was the common size back then. Newer 8 gig, 16 gig, 32 gig, and larger micro SD cards are relatively new products. Still the prices have plummeted to the point where a 32 gig micro SD card is pretty inexpensive. You can get the 32 gig micro SD card for both cameras. Even if the bios chip on the PC1249 supports only a smaller micro SD card, it'll use as much memory on the 32 gig card as allowed by the camera bios chip anyway. And you have the benefit of having a fairly fast read and write speed with the newer 32 gig micro SD card you are considering. Meaning when you take pictures they will be saved much faster so you can take second shots. Your old 2 gig micro SD card was pretty slow for sure.