05 Read versus write speed
The average Nikon now has a resolution of 24 million pixels, meaning that a 32GB card will hold an average of 1500 RAW and JPEG files combined. SD cards are classified by class. For UHS cards, look for the number surrounded by a U shape; ‘1’ denotes a minimum speed of 10MB per second and ‘3’ of 30MB per second. There are several SD card types available, so check which is most compatible with your camera. At present the highest performance for the majority of the Nikon range is UHS-1. When you buy a premium card check for features such as magnet-, shock-, temperature- and waterproofing. The speed quoted isn’t always what it seems. Check that write speed (writing data to the card) is as impressive as read speed (reading data off it), as this is more important when shooting.