A:Answer The terms "Ultra" and "Extreme" are used by memory card vendors to distinguish the different series of their card products. When purchasing memory cards it is more important to understand the details below than the terms Ultra and Extreme.
The Nikon B700 camera supports SD, SDHC, and SDXC cards. These terms or labels are defined in the industry-standard SD memory card specification documents.
SD (Secure Digital) cards can store up to 2GB of data, SDHC (SD High Capacity) cards can store from 2GB to 32GB of data, and SDXC (SD Extended Capacity) can store 32GB up to 2TB of data. The larger the capacity, the more images can be stored on a single card. However, if the camera is set to take pictures at its highest resolution, the number of pictures that can be stored on a single card will be smaller than when the camera is set to take lower resolution pictures.
For use in the B700 the SD card should have a speed class rating of 6 or above. The speed class is noted on the typical SD card with a symbol in the shape of a "C" with a number inside the letter. Class 10 cards are about the fastest cards available today.
When purchasing memory cards for this camera, larger capacity SDHC and SDXC cards each with a Class 10 speed rating are the most cost effective for storing images. Having an additional card available when the card in the camera is full is always a good idea.