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"Picky Details" for the Canon PowerShot A410 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 Canon PowerShot A410:

Canon PowerShot A410 Timings
Operation
Time
(secs)
Notes
Power On -> First shot
1.1
LCD turns on and lens extends forward.
Shutdown
1.7 - 4
First time is time to retract lens, second time is worst-case buffer-clearing time.
Play to Record, first shot
1.6
Time until first shot is captured.
Record to play
2.0 - 1.6
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
0.76 / 0.64
First time is at full wide-angle, second is full telephoto.
Shutter lag, prefocus
0.062
Time to capture, after half-pressing shutter button.
Cycle Time, single shot mode

1.83

Times are averages. Regardless of resolution, shoots at this rate indefinitely, clearing the buffer after each shot.
Cycle Time, Flash exposures 10 Flash at maximum power output.
Cycle Time, continuous mode 0.42
(2.4 fps)

Times are averages. Regardless of resolution, shoots at this rate seemingly indefinitely. Buffer clears in 2 seconds after over 100 large/fine images, almost immediately for lowest resolution.

 

Power

The Canon PowerShot A410 uses a two AA batteries for power, and ordinary alkaline batteries are included with the camera. The table below shows the power drain I measured in various operating modes, and the corresponding run times to be expected from a standard set of 1600 mAh NiMH cells.

Operating Mode
Power
(@3.3 volts on the external power terminal)
Est. Minutes
(two 1600 mA cells)
Capture Mode, w/LCD
302 mA
231
Capture Mode, no LCD
42 mA
1676
Half-pressed shutter w/LCD
302 mA
231
Half-pressed w/o LCD
239 mA
291
Memory Write (transient)
260 mA
n/a
Flash Recharge (transient)
490 mA
n/a
Image Playback
90 mA
779

 

Storage Capacity

The Canon PowerShot A410 stores its photos on SD / MMC memory cards, and a 16 MB card is included with the camera. (I strongly recommend buying at least a 64 MB card, preferably a 128 MB one, to give yourself extra space for extended outings.) The chart below shows how many images can be stored on the included 16 MB card at each size/quality setting.

Image Capacity vs
Resolution/Quality
16 MB Memory Card
Fine Normal
Basic
2048 x 1536
Images
(Avg size)
9
1.7 MB
16
943 KB
33
479 KB
Approx.
Compression
6:1 11:1 20:1
1600 x 1200 Images
(Avg size)
15
1.1 MB
26
595 KB
50
314 KB
Approx.
Compression
5:1 10:1 18:1
1024 x 768 Images
(Avg size)
26
612 KB
46
347 KB
80
198 KB
Approx.
Compression
4:1 7:1 12:1
640 x 480
Images
(Avg size)
56
281 KB
88
182 KB
138
116 KB
Approx.
Compression
3:1 5:1 8:1

 

Download Speed

The Canon PowerShot A410 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 771 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.)

A410 Review
A410 Test Images
A410 Specifications
A410 "Picky Details"
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