Panasonic has announced 8GB and 16GB SDHC cards that are promised to deliver 60MB/s read speeds (no specific write speed data has been given). The new memory cards utilize the faster UHS-I bus interface in achieving quicker throughput. As of this writing, no shipping or announced Canon or Nikon digital SLR supports UHS-I. This means Panasonic's new cards will operate within a bus interface maximum of 25MB/s in today's SD slot-equipped cameras from each manufacturer.

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