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SD card read/write from in-camera diagnostic


pico

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Regarding in-camera maximum data transfer. The following measures were made from the hidden M9 service menu. I used a couple cards that were on the table. Does this show exactly where the bottle-necks is?

16gb SanDisk

WRITE: 1609ms, Rate 3182 kB/s
READ:   1443ms, Rate 3548 kB/s

16gb Lexar 100x

WRITE: 1697ms, Rate 3017 kB/s
READ:  1437ms, Rate 3562 kB/s

 

Not fast!

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I would say that the bottleneck is the M9 SD controller.

 

BTW: How do you enter the hidden service menu ?

 

I suggest the problem is in the electronics/processing in the camera.    The cards works fine in other cameras,  but are slow as a turtle in M8 & 9.   

 

I would advise against using high capacity cards,> 16,  or fast cards in the M9.   Stick to what is listed in the manual.

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