I am not sure which SD card to buy for a Canon IXUS 145 compact camera. The camera is also known under the brand Canon ELPH135.
The seller recommends SD or SDHC or SDXC. A test report tells me the battery is empty after 2 hours of high resolution filming, so I guess more than 8 GB make no sense. But which speed should the SD card have ? It makes no sense having a speed much higher than the camera hardware supports, but on theother hand I do not want that the camera compresses my movies just because else the SD writing speed is too low. So what writing speed should I look for ?