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"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:

Sony DSC-T5 Timings
Operation
Time
(secs)
Notes
Power On -> First shot
1.3
Simple startup.
Shutdown
0 - 6
First time is simple shutdown, second time is worst-case buffer-clearing time.
Play to Record, first shot
0.2
Time until first shot is captured.
Record to play
2.0 / 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.
Shutter lag, full autofocus
0.24 / 0.35
First time is at full wide-angle, second is full telephoto.

Shutter lag, continuous autofocus

0.24
Shutter lag, manual focus
0.21
Shutter lag, prefocus
0.012
Time to capture, after half-pressing shutter button.
Cycle Time, max/min resolution

1.03 /
1.20

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.

Operating Mode
Battery Life
Still-image capture mode
backlight on
128 minutes
Image playback
backlight on
234 minutes

 

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.

Image Capacity vs
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
640 x 480
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 Review
T5 Test Images
T5 Specifications
T5 "Picky Details"
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