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Nikon Coolpix P1
"Picky Details" for the Nikon Coolpix P1 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 Nikon Coolpix P1:
|
Nikon Coolpix P1 Timings
|
|
Operation
|
Time
(secs)
|
Notes
|
| Power On -> First shot |
4.3
|
LCD turns on and lens extends forward.
|
| Shutdown |
3.7 - 22
|
First time is time to retract lens, second time is
worst-case buffer-clearing time.
|
| Play to Record, first shot |
1.4
|
Time until first shot is captured.
|
| Record to play |
3.6 / 0.3
|
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 |
0.67 / 0.75
|
First time is at full wide-angle,
second is full telephoto. |
|
Shutter lag, continuous autofocus
|
0.66
|
Rarely any faster than normal autofocus, at least for stationary subjects. (We have no way of reliably testing shutter lag with moving subjects.)
|
| Shutter lag, limited focus range, telephoto |
0.69
|
Slightly faster than normal autofocus with the lens at telephoto focal lengths. |
| Shutter lag, prefocus |
0.074
|
Time to capture, after half-pressing shutter
button. |
| Cycle Time, max/min resolution |
3.17 / 3.03
|
First number is for large/fine files, second number is time for "TV" mode (640x480) images. Times are averages. In both modes, shoots this fast continuously. In large/fine mode, buffer fills slowly, and clears in 13 seconds. In TV mode, buffer clears after each shot. |
| Cycle Time, Flash exposures
|
6 |
Flash at maximum power output. |
| Cycle Time, continuous High
mode, max/min resolution |
0.44 (2.2 fps) |
Times are averages. Cycle time is 0.44 seconds for five frames, regardless of resolution. After a pause of 7 seconds in large/fine mode, it slows to about 3.2 seconds per shot. After a pause of 6 seconds in TV mode, it slows to about 2 seconds per shot. Buffer clears in 7 seconds for large/fine images, 6 seconds for lowest resolution.
|
| Cycle Time, continuous Low mode, max/min resolution |
0.56
(1.8 fps) |
First number is for large/fine files, second number is time for small/basic images. Times are averages. Shoots 11 frames this fast in large/fine mode, or over frames in TV mode. Buffer clears in 10 seconds for large/fine shots, in 6 seconds for TV mode images. |
| Cycle Time, Multi 16 mode |
0.60
(1.66 fps) |
Camera captures sixteen 816 x 622 pixel images, stores them in 4x4 arrays inside normal 3264x2448 files. Buffer clears in about a second. |
| Cycle Time, Ultra High Speed mode |
0.03
(30.3 fps) |
Times are averages. Shoots up to 100 640x480 images at 30 fps. Buffer clears in 18 seconds. |
| Cycle Time, 5-shot Buffer mode |
1.17 (0.86 fps) |
Shoots at this rate continuously while shutter button is depressed, and records only the last five frames after the button is released. Buffer clears in 7 seconds. |
Power
The Nikon Coolpix P1 uses a custom rechargeable LiIon battery for power, so we were unable to perform our usual power measurements. Using the CIPA standard, Nikon claims approximately 180 shots on a fully charged battery for it, a number that's a bit on the low side. - And WiFi usage undoubtedly takes more power to drive the radio link. (We managed to completely drain a fresh battery in just over an hour of playing with the camera, with WiFi active about half of the time.) Overall, our standard recommendation that you purchase a second battery right along with the camera applies doubly to the P1.
Storage Capacity
The Nikon Coolpix P1 stores its photos on SD / MMC memory cards or in approximately 29 MB of internal memory, and no 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
29 MB Internal Memory
|
Fine |
Normal |
Basic
|
3264 x 2448
|
Images
(Avg size) |
7 4.1 MB |
14 2.1 MB |
27 1.1 MB |
Approx.
Compression |
6:1 |
12:1 |
23:1 |
2592
x 1944
|
Images
(Avg size) |
11 2.6 MB |
22 1.3 MB |
43 678 KB |
Approx.
Compression |
6:1 |
11:1 |
22:1 |
2048
x 1536
|
Images
(Avg size) |
17 1.6 MB |
34 843 KB |
65 446 KB |
Approx.
Compression |
6:1 |
11:1 |
22:1 |
| 1600
x 1200 |
Images
(Avg size) |
29 1.0 MB |
55 529 KB |
104 281 KB |
Approx.
Compression |
6:1 |
11:1 |
22:1 |
1280
x 960
|
Images
(Avg size) |
44 661 KB |
84 347 KB |
147 198 KB |
Approx.
Compression |
6:1 |
11:1 |
19:1 |
| 1024
x 768 |
Images
(Avg size) |
65 446 KB |
118 248 KB |
197 149 KB |
Approx.
Compression |
5:1 |
10:1 |
16:1 |
|
640 x 480
|
Images
(Avg size) |
147 198 KB |
253 116 KB |
358 82 KB |
Approx.
Compression |
5:1 |
8:1 |
11:1 |
Download Speed
The Nikon Coolpix P1 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 493 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.) Transfers via the WiFi connection are a little slower. We clocked the P1 at about 350 Kbytes/second on a purely "G" WiFi network, and about 225 Kb/sec when both B and G devices were active.
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