Olympus C8080 Memory
Card Write Speed Test
Overview
This is a test to measure the write speed of
the Olympus C8080 to different memory cards.
Conclusion
- Update June 17th, 2006: even a firmware update to the latest
firmware does not speed up the 8080.
- It appears that the 8080 writes with a maximum of 0.9 MByte/s
(sustained) to CF cards.
- There is no advantage in using CF cards faster than 30x (actually
the camera is write-limited to 6x, but we didn't test the write speed
with slow CF cards).
- The maximum write speed to xD cards is 0.8 MByte/s (sustained) .
Since xD cards are more expensive than CF cards, the only reason to use
xD cards is if you want to use the 8080's inbuilt panorama function.
- These write speeds are painfully low. The Olympus 5050 for
instance is capable of writing at 2.5MByte/s (sustained) to fast CF
cards and manages to write a RAW image to CF in about 3 seconds. The
8080 needs at least 12 seconds to write a RAW image to a memory card.
Test procedure
- The time the 8080 needs to write a burst of five RAW files (taken
in the Hi mode) to the memory card was measured.
- For this the camera was set to manual mode, with a specific
aperture and exposure time. Focus was locked and the internal flash
disabled.
- RAW was selected as the file type.
- The Hi mode was activated.
- The shutter was pressed until the camera finished taking the last
frame.
- With a stopwatch the time was measured which passed between the
instant the shutter was pressed and the instant the camera finished
writing the last frame to the memory card (when the red light stopped
blinking and the camera was ready to shoot again).
Explanation
of the tables
- Card Type: CF=Compact Flash,
CF II=Compact Flash type II, xD=Extreme Digital
- Brand and Model as written on
the cards
- Size in MegaBytes
- Write time: the time in
seconds needed to write five RAW image to the memory card
- Write speed: 5 x RAW file size / write speed (= 59MB /
write time in seconds). In MB/s
- Firmware: The firmware version
of the camera.
- Read time: the time the
camera needs to display a RAW file in playback mode (here the xD card
is faster)
Results (unsorted)
Card
type
|
Brand
|
Model
|
Size
(MB)
|
Write
time (seconds)
|
Write
speed
(MByte/s)
|
Firmware
|
Read
time
(seconds)
|
CF
|
Hitachi
|
4GB
MD - Muvo sourced
|
4096
|
68.2
|
0.84
|
v757-74
|
|
CF
|
Sandisk
|
Ultra
II (CF) card
|
512
|
64
|
0.90
|
v757-74
|
|
CF
|
Transcend
|
45x
CF card
|
512
|
64
|
0.90
|
v757-74 |
|
CF
|
Sandisk
|
CF
card
|
256
|
69.6
|
0.83
|
v757-74 |
|
CF
|
Transcend
|
30x
|
512
|
64
|
0.90
|
v757-75
|
9.9
|
CF
|
Transcend
|
45x
|
1024
|
63
|
0.91
|
v757-75 |
|
xD
|
Olympus
|
xD
|
128
|
73
|
0.79
|
v757-75 |
8.2
|
CF
|
PNY
|
CF
|
512
|
63
|
0.94
|
v757-78
|
|
xD
|
Fuji
|
xD
|
|
62
|
0.95
|
v757-78
|
|