"Picky Details" for the Sony DSC-T5 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 DSC-T5:
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(secs) |
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Power On -> First shot |
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Simple startup.
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Shutdown |
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First time is simple shutdown, second time is worst-case buffer-clearing time.
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Play to Record, first shot |
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Time until first shot is captured.
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Record to play |
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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.
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Shutter lag, full autofocus |
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First time is at full wide-angle, second is full telephoto. |
Shutter lag, continuous autofocus |
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Shutter lag, manual focus |
0.21
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Shutter lag, prefocus |
0.012
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Time to capture, after half-pressing shutter button. |
Cycle Time, max/min resolution |
1.03 / |
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 pace indefinitely. |
Cycle Time, Flash exposures | 4.5 | Flash at maximum power output. |
Cycle Time, continuous mode, max/min resolution | 0.70 / 0.61 (1.43 / 1.61 fps) |
First number is for large/fine files, second number is time for "TV" size images. Times are averages. In large/fine mode, shoots 9 frames this fast, clears the buffer in about 6 seconds, and shoots 9 more. In TV mode, shoots over 100 at this rate, then clears the buffer in 5 seconds. |
Cycle Time, continuous Multi Burst mode | 0.03 (30 fps) |
Camera captures sixteen 320x240 pixel images, stores them in 4x4 arrays inside normal 1280x960 files. Frame rate can be set to 30, 15, or 7.5 fps. |
Power
The Sony DSC-T5 uses a Sony NP-FT1 3.6V 2.4Wh Li-ion battery for power. We were unable to test the actual battery drain, but we've found Sony's own InfoLITHIUM system reports battery runtime estimates with pretty good accuracy, so we've filled in what the camera says it expects after a full charge.
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Still-image capture mode backlight on |
128 minutes
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Image playback backlight on |
234 minutes
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Storage Capacity
The Sony DSC-T5 stores its photos on Memory Stick Duo memory cards or in approximately 32 MB of internal memory, 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.) The chart below shows how many images can be stored in the internal memory at each size/quality setting.
Resolution/Quality 32 MB Memory Card |
Fine | Normal | |
2592
x 1944 |
Images (Avg size) |
12 2.6 MB |
22 1.4 MB |
Approx. Compression |
6:1 | 11:1 | |
2048
x 1536 |
Images (Avg size) |
19 1.6 MB |
34 924 KB |
Approx. Compression |
6:1 | 10:1 | |
1280
x 960 |
Images (Avg size) |
46 684 KB |
85 376 KB |
Approx. Compression |
5:1 | 10:1 | |
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Images (Avg size) |
187 171 KB |
467 68 KB |
Approx. Compression |
5:1 | 13:1 |
Download Speed
The Sony DSC-T5 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 5247 KBytes/second. (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.)
T5 Test Images
T5 Specifications
T5 "Picky Details"
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