The number of pictures that a 4GB memory card holds is directly related to the size of the pictures, but it generally has the capacity to store 1,140 photos that are 10 megapixels. This figure is based on the fact that 1 megapixel equals about 1,000,000 pixels, that 1MB is equal to about 1,000,000 bytes and 1GB equals about 1,000MB.Continue Reading
There are three main factors that determine the size of a photo: the number of megapixels of the photo, the type of photo and whether the photo is uncompressed. The more megapixels a photo has, the more room it takes up. A 4GB memory card holds nearly 1,140 photos at 10 megapixels apiece but only 520 photos at 22 megapixels. Uncompressed photos are a lot larger than traditional photos, so a 4GB memory card is only able to hold around 115 pictures of 10 megapixels.
The last thing that has to be considered is the format in which the picture is saved. The most common format is JPEG. These picture types are of medium quality. A smaller size file format for pictures is GIF. These pictures are small in size because GIF file formats only support up to 256 colors.Learn more about Digital Storage
For high-definition photos at 250 kilobytes of memory each, a 1-gigabyte memory card holds 4,000 pictures. HD wallpaper images are about 250 kilobytes; personal pictures are smaller and require less memory. Super-HD images of 2,560 by 1,600 pixels are up to 1.6 megabytes. A 1-gigabyte card holds 625 such photos.Full Answer >
The major benefit of a memory card with a large storage capacity comes from gaining more data storage for cameras, smartphones and tablets. This allows consumers to take more photos and shoot more videos without the need to transfer data to devices with more storage.Full Answer >
A compact disc's information capacity is between 650 and 700 megabytes. Typically, approximately 50 megabytes are used for the purposes of file structure and indexing.Full Answer >
An Eyefi card is a secure digital memory card with built-in Wi-Fi capabilities. Eyefi cards are available for purchase from Adorama, Amazon, Best Buy and B&H Photo Video, as of 2015.Full Answer >