How many photos can be stored on 80GB?

Answer 1

It depends, Most camera these days are at the range of 8, 10, 15 mega pixel

@ 8 mp can hold pix at about 380, @10 mp can hold about 280 & 15 mp a about 140 high end quality pix, most of all 80GB can hold thousands of photos,

Answer 2

This depends entirely upon the format used. Most photo cameras will make pictures in JPEG format (modern ones). A very large, high quality JPEG will take around 500 Kb. 80 Gb has 80.000.000 Kb in it. This means it can comfortably contain 16000 pictures. Larger (example: Photoshop) files will take around 5 Mb (again, quite large). This is 5000 Kb. You can store around 1600 of these. Let's just say most private users will never fill them completely with pictures.