Digital Camera Home >
Digital Camera Reviews > Sony Digital Cameras >
Sony CyberShot DSC-P200
"Picky Details" for the Sony Cyber-shot DSC-P200
digital camera
(Timing, Power, and Storage Info)
Timing
When you press the shutter release on a camera, there's usually a lag time
or delay before the shutter actually fires. This corresponds to the time required
for the autofocus and autoexposure mechanisms time to do their work, and can
amount to a fairly long delay in some situations. Since this number is rarely
reported on (and even more rarely reported accurately), and can significantly
affect the picture taking experience, I routinely measure both shutter delay
and shot to shot cycle times for all cameras I test, using a test system I designed
and built for the purpose. (Crystal-controlled, with a resolution of 0.001 second.)
Here are the numbers I collected for the Sony Cyber-shot DSC-P200:
|
Sony Cyber-shot DSC-P200 Timings
|
|
Operation |
Time
(secs) |
Notes |
| Power On -> First shot |
1.4 |
LCD turns
on and lens extends forward. Quite fast. |
| Shutdown |
1.3 - 22 |
First time is time to retract
lens, second time is worst-case buffer-clearing time. First time is
quite fast. Second time is long, but corresponds to clearing the buffer
after 100 consecutive small/basic shots in continuous shooting mode. |
| Play to Record, first shot |
0.1 |
Time until
first shot is captured. Almost immediate, very fast. |
| Record to play |
2.7 / 0.2 |
First time is that required
to display a large/fine file immediately after capture, second time
is that needed to display a large/fine file that has already been processed
and stored on the memory card. First time is average, second time is
very fast. |
| Shutter lag, full autofocus |
0.30 / 0.55 |
First time is at full wide-angle,
second is full telephoto. Very fast, better than most full-sized digital
cameras, regardless of price range. |
| Shutter lag, continuous autofocus |
0.310 |
As usual, continuous autofocus
mode doesn't help with shutter lag for static subjects. (Still pretty
fast though.) |
| Shutter lag, manual focus |
0.211 |
Very fast. |
| Shutter lag, prefocus |
0.013 |
Time to capture, after half-pressing shutter
button. Extremely fast. |
| Cycle Time, max/min resolution |
1.44 / 1.27
|
First number is for large/fine
files, second number is time for "TV" mode (640x480) images.
Times are averages. In both modes, clears the buffer after each shot,
and maintains this rate indefinitely. Very fast, especially for a compact
digital camera model. (Times measured with a 256MB Lexar Memory Stick
Pro card.) |
| Cycle Time, burst mode, max/min
resolution |
1.05 / 0.92
(0.95 / 1.09 fps) |
First number is for large/fine
files, second number is time for "TV" size images. Times are
averages. In large/fine mode, shoots five shots this fast, clears the
buffer in 6.8 seconds, and is ready for five more. In TV mode, shoots
over 100 shots this fast and takes 21 seconds to clear the buffer. Fast
but not blazingly so, but buffer capacity for small/basic images is impressive.
(Times measured with a 256MB Lexar Memory Stick Pro card.) |
| Cycle Time, Multi burst mode |
0.03
(30 fps) |
Camera captures 320x240 pixel
images, stores them in 4x4 arrays inside normal 1280x960 files. Rate can
be set to 30, 15, or 7.5 frames per second. Buffer clears almost immediately.
Extremely fast. |
Very good shutter lag and cycle time, particularly for a compact model.
Like most of Sony's current digicam models, the DSC-P200 is very responsive
to the shutter, with full-autofocus lag times that range from 0.30 to 0.55
seconds, and a blazing 0.013 (!) shutter lag in when prefocused by half-pressing
and holding the shutter button before the shot itself. Cycle times are also
excellent for a 7-megapixel camera, regardless of size, at 1.44 seconds/shot
in single shot mode, with no apparent buffer limitation, and 1 frame/second
for five-shot bursts. Its "multi-burst" mode captures 16 small images
at a time, at rates as high as 30 frames/second. All in all, a great performer,
all the more surprising given its diminutive size. (For those comparing the
two models, the DSC-P200 is slightly faster starting up and shutting down
than the previous P150, a bit faster from shot to shot, and much faster at
downloading images. Shutter lag numbers are virtually identical between the
two models.)
Power
The Sony Cyber-shot DSC-P200 uses a custom rechargeable LiIon battery for
power. Its custom power connector prevented me from measuring its power drain
directly, but Sony's InfoLITHIUM battery technology is very accurate when
predicting remaining battery life. The numbers in the table below were what
the camera displayed as remaining run time with a fully-charged battery
|
Operating Mode |
Battery Life |
| Still-image capture mode |
202 minutes |
Movie capture mode:
640 Fine |
119 minutes |
Movie capture mode:
640 Standard |
145 minutes |
Movie capture mode:
160 |
162 minutes |
| Playback mode |
402 minutes (!) |
Really excellent battery life for a compact digicam. Thanks to Sony's
InfoLithium battery technology, the P200 showed really excellent battery life
compared to other compact digicams (actually, it's very good compared to any
size digicam), with 202 minutes projected runtime in capture mode with the
LCD on, and 402 minutes in playback mode. As always though, I still recommend
purchasing a second battery along with the camera, but with the P200, this is
much less of a consideration than it normally is. (Interestingly, the P200 consumes
more power in its higher-quality movie modes than in lower-quality ones. Even
at the highest quality movie setting though, it still provides nearly 2 hours
of continuous shooting on a fully-charged battery.)
Storage Capacity
The Sony Cyber-shot DSC-P200 stores its photos on Memory Stick memory cards,
and a 32 MB card is included with the camera. (I strongly recommend buying
at least a 128 MB card, preferably a 256 MB one, to give yourself extra space
for extended outings.) Note too, that you need to purchase a Memory Stick Pro
in order to use the P200's highest-quality movie mode. The chart below shows
how many images can be stored on the included 32 MB card at each size/quality
setting.
Image Capacity vs
Resolution/Quality
32 MB Memory Card |
Fine |
Normal |
3072
x 2304
|
Images
(Avg size) |
8
3.8 MB |
16
1.9 MB |
Approx.
Compression |
6:1 |
11:1 |
2592
x 1944
|
Images
(Avg size) |
11
2.7 MB |
22
1.4 MB |
Approx.
Compression |
6:1 |
11:1 |
2048
x 1536
|
Images
(Avg size) |
18
1.7 MB |
33
952 KB |
Approx.
Compression |
6:1 |
10:1 |
1280
x 960
|
Images
(Avg size) |
45
705 KB |
82
387 KB |
Approx.
Compression |
5:1 |
10:1 |
|
640 x 480 |
Images
(Avg size) |
181
176 KB |
454
70 KB |
Approx.
Compression |
5:1 |
13:1 |
Download Speed
The Sony Cyber-shot DSC-P200 connects to a host computer via a USB interface.
Downloading files to my Sony desktop running Windows XP (Pentium IV, 2.4 GHz),
I clocked it at 2112 KBytes/second, a very fast rate. (Cameras with slow USB
interfaces run as low as 300 KB/s, cameras with fast v1.1 interfaces run as
high as 600 KB/s. Cameras with USB v2.0 interfaces run as fast as several
megabytes/second.)
|