With both a Olympus 64MB card and now a SanDisk 128MB card there's no fear of ever running out of media space even when traveling. The 64MB will handle 128 HQ shots (high def.), 665 SQ shots (standard def.) on my Olympus D-490 Zoom (2.1 Megapixel). The SanDisk 128MB Smart Media card twice as many. SHQ (Super-high quality) slows things down a bit.The Olympus card started acting up a week ago: It would only hold 23 standard shots. Two calls to Tech support did not reveal a high degree of service and I learned they do not warrant the card. Fortunately reformating fixed the problem.