Thank you for being a valued part of the CNET community. As of December 1, 2020, the forums are in read-only format. In early 2021, CNET Forums will no longer be available. We are grateful for the participation and advice you have provided to one another over the years.

Thanks,

CNET Support

General discussion

exposure time vs memory card speed

Apr 29, 2012 1:51AM PDT

Hi,
I was told that a faster memory card would allow me to use shorter exposure times. Is this true?
Thanks,
........ john
Camera Canon S5is
Card ..... Kodak High-Speed (60X) SDHC (4)

Discussion is locked

- Collapse -
No
Apr 29, 2012 2:28AM PDT

A faster card only helps the write time, and the difference would be so small as to be imperceptible. It would have no effect on exposure.

Exposure is strictly a function of the combination of ISO, aperture, and shutter speed. To gain a shorter exposure time means using a faster shutter speed. That can only be accomplished by changing the ISO and/or aperture.

- Collapse -
exposure time vs. memory card speed
Apr 29, 2012 10:43AM PDT

Thanks.
I suspected as much; but not being sure, I wanted to ask someone who knows.
....... john