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Timings & File Sizes

Apart from an annoyingly slow startup time (same as Canon's G2 - thanks to the extending lens) the QV-4000 was functionally usable. Lag and write times were respectable. The only slow downs were experienced when using an IBM Microdrive.

Timing Notes: All times calculated as an average of three operations. Unless otherwise stated all timings were made on a 2240 x 1680 Fine JPEG image (approx. 1.5 MB per image).

The media used for these tests were:

  • 16 MB Hitachi Type I CF card (as supplied)
  • 256 MB Viking Type I CF card
  • 1 GB IBM Microdrive Type II CF card
Legend
  Quickest
  Noticeably slower

Action Details Time, seconds
(Hitachi CF)
Time, seconds
(Viking CF)
Time, seconds
(Microdrive)
Power: Off to Record Lens extension 6.1 5.8 5.8

Power: Off to Play *1

Image displayed 1.6 2.1 3.5
Power: Record to Off Lens extended 4.2 4.5 4.4
Power: Play to Off *1 Lens retracted 1.6 1.6 2.5
Mode: Record to Play Image displayed 1.3 1.3 2.5
Mode: Play to Record Lens extended 1.5 1.5 2.5
Play: Magnify 11 steps to 3.2x 3.3 3.3 3.3
Rec: Thumbnail view 3.9 3.7 4.5

Action Details Time, seconds
Zoom from Wide to Tele Full zoom from 35 mm to 105 mm (3 x) 2.8
Auto Focus LAG Half zoom, Normal AF *3 0.9 - 1.3
Auto Focus LAG Half zoom, Macro AF *3 1.1 - 2.1
Shutter Release LAG Using viewfinder <0.1
Shutter Release LAG Using LCD monitor 0.1
Total LAG *3 ~1.0
Off to Shot Taken Using supplied 16 MB Hitachi CF card 6.2
Shot to Shot Same for LCD in review or preview modes (AF) 2.6

*1 Approximately 2.2 seconds after the initial image is displayed it is replaced with a higher resolution image (which can be magnified).
*2 AF is faster at wide angle than at telephoto (normal behaviour).
*3 Depending on focus

Auto Focus LAG is (roughly) the amount of time it takes the camera to autofocus (a half-press and hold of the shutter release button), this timing is normally the most variable as its affected by the subject matter, current focus position, still or moving subject etc. This timing is an average.

Shutter Release LAG is the amount of time it takes to take the shot after autofocus, this timing assumes you have already focused (half-pressed the shutter release) and now press the shutter release button all the way down to take the shot. This timing is an average.

Total LAG is the total time it takes (not just the two above added together) if you haven't pre-focused, that is no finger touching the shutter release button, press it all the way down in one movement, this new timing is how long it'd take if you were in one of those spur-of-the-moment situations. This timing is an average.


Continuous modes

The QV-4000 has one continuous shooting mode, as there is no way to disable the LCD or turn off record view the QV-4000 can never shoot faster than about 0.7 fps (or one shot every 1.4 seconds).

The table below shows the results of our continuous shooting test, indicating the actual frame rate along with maximum number of frames and how long you would have to wait after taking the maximum number of frames before you could take another shot. Timings taken using a 256 MB Viking Type I CF card.

Image Type Approx. frames per sec Time between frames Max no. of
frames
Time between frames after max *1
2240 x 1680 Fine 0.7 fps ~1.38 sec 6 ~2.50 sec
2240 x 1680 Normal 0.6 fps ~1.66 sec 14 ~2.30 sec
1280 x 960 Normal 0.5 fps ~2.08 sec - ~2.08 sec
640 x 480 Normal 0.6 fps ~1.66 sec - ~1.66 sec

*1 Once the internal buffer is full the camera will only take a shot when there is space for a frame in the buffer, thus after the 'max no. of frames' is reached shooting slows to the time indicated.

At 1280 x 960 or 640 x 480 and with a relatively quick CF card (such as the 256 MB Viking used in this test) you can continually shoot one frame every 2 or 1.6 seconds until the card is full.


File Flush / Display Timing

Timings shown below are the time taken for the camera to process and "flush" the image out to the Compact Flash card, the timer was started as soon as the shutter release was pressed (shutter click was heard) and stopped when activity indicator LED beside the viewfinder stopped blinking. This means the timings also include the cameras processing time and as such are more representative of the actual time to "complete the task".

The media used for these tests were:

  • 16 MB Hitachi Type I CF card (as supplied)
  • 256 MB Viking Type I CF card
  • 1 GB IBM Microdrive Type II CF card
Image Type Time to store
(seconds)
  Time to full display *2
(seconds)
Hitachi Viking Microdrive   Hitachi Viking Microdrive
2240 x 1680 TIFF *1 36.1 26.8 52.5   1.6 1.6 2.1
2240 x 1680 Fine 5.2 4.2 7.1   2.5 2.3 2.8
2240 x 1680 Normal 5.0 4.2 7.1   2.4 2.2 2.8
1280 x 960 Normal 3.8 3.8 4.9   1.1 1.1 2.2
640 x 480 Normal 2.6 2.6 3.6   <1.0 <1.0 1.0

*1 The QV-4000 allows you to stop writing a TIFF file (cancel save) by simply pressing the DISP button. This is can be a big time saver if you intend shooting in TIFF mode.
*2 The QV-4000 displays a lower quality version of the image almost immediately, it then loads the full image from the CF card in the background, once loaded the lower quality image is replaced, exposure information is displayed and the image can be magnified. This timing represents the amount of time it took the QV-4000 to load the 'full image' (this can be interrupted at any time by pressing the 4-way control button left or right).

Despite the QV-4000's Microdrive compatibility it performed noticeably slower with the Microdrive than with normal flash cards. My advice would be to go for 256 MB CF flash cards for the best performance.


File Sizes

Here's a comparison of the average byte size at different image size / quality combinations.

Image Type File size *1
(approx.)
No. on supplied
16 MB CF Card
No. on
1 GB Microdrive
2240 x 1680 TIFF 11,028 KB  1 87
2240 x 1680 Fine JPEG 1,300 KB  7 513
2240 x 1680 Normal JPEG 1,100 KB  10 733
1280 x 960 Normal JPEG 350 KB  30 2102
640 x 480 Normal JPEG 90 KB  103 7009

*1 All file sizes are an average of three files. As is the case with JPEG it's difficult to predict the size of an image because it will vary a fair amount depending on the content of the image (especially the amount of detail captured). For example, take a photograph of a fairly empty wall and you'll get a small JPEG, take a photograph of a bush with a lot of detail and you'll get a larger image. File sizes here are closer to the later, the larger size of file you should expect.


Battery life

We ran the camera through our new battery life test. This test is designed to be fair and comparative to each camera and battery type:

  • Take 4 shots without flash
  • Wait 2 minutes (50% of the time powering the camera off)
  • Take 1 shot with flash
  • Wait 1 minute
  • Repeat

This test routine was carried out on five different cameras simultaneously. All batteries had been fully discharged and recharged before the test and all cameras were reset to their factory default settings. Here are the results:

Camera
Prosumer / SLR-Like
Battery Power Battery life Number of shots
Minolta DiMAGE 7 4 x AA NiMH 1600 mAh (GP) 7.7 Wh 1 hr 14 mins 125
Minolta DiMAGE 5 4 x AA NiMH 1600 mAh (GP) 7.7 Wh 1 hr 56 mins 195
Nikon Coolpix 5700 EN-EL1 4.8 Wh 2 hr 08 mins 215
Canon PowerShot S40 NB-2L 3.9 Wh 2 hr 13 mins 225
Minolta DiMAGE S304 4 x AA NiMH 1600 mAh (GP) 7.7 Wh 2 hr 18 mins 235
Canon PowerShot S45 NB-2L 3.9 Wh 2 hr 28 mins 240
Nikon Coolpix 4500 EN-EL1 4.8 Wh 2 hr 27 mins 250
Fujifilm FinePix 6900Z NP-80 4.1 Wh 2 hr 29 mins 250
Nikon Coolpix 990 4 x AA NiMH 1600 mAh (GP) 7.7 Wh 2 hr 30 mins 255
Nikon Coolpix 995 EN-EL1 4.8 Wh 2 hr 30 mins 255
Nikon Coolpix 5000 EN-EL1 4.8 Wh 2 hr 32 mins 260
Minolta DiMAGE 7Hi 4 x AA NiMH 1600 mAh (GP) 7.7 Wh 2 hr 33 mins 260
Canon PowerShot Pro1 BP-511A 10.2 Wh 2 hr 36 mins 265
Canon PowerShot S50 NB-2L 3.9 Wh 2 hr 39 mins 270
Minolta DiMAGE S404 4 x AA NiMH 1600 mAh (GP) 7.7 Wh 2 hr 39 mins 270
Sony DSC-V1 NP-FC11 2.8 Wh 2 hr 39 mins 270
Olympus C-7000 Zoom LI-12B 4.5 Wh 2 hr 44 mins 280
Nikon Coolpix 8700 EN-EL1 5.0 Wh 2 hr 45 mins 280
Minolta DiMAGE 7i 4 x AA NiMH 1600 mAh (GP) 7.7 Wh 2 hr 46 mins 270
Olympus E-20 4 x AA NiMH 1600 mAh (GP) 7.7 Wh 2 hr 48 mins 285
Canon PowerShot G1 BP-511 8.1 Wh 3 hr 00 mins 300
Nikon Coolpix 5400 EN-EL1 4.8 Wh 3 hr 06 mins 315
HP Photosmart 850 4 x AA NiMH 1600 mAh (GP) 7.7 Wh 3 hr 12 mins 325
Sony DSC-S75 NP-FM50 8.6 Wh 3 hr 15 mins 330
Nikon Coolpix 8800 EN-EL7 8.1 Wh 3 hr 27 mins 350
Fujifilm FinePix S602Z 4 x AA NiMH 1600 mAh (GP) 7.7 Wh 3 hr 29 mins 350
Canon PowerShot G2 BP-511 8.1 Wh 3 hr 32 mins 355
Casio QV-4000 4 x AA NiMH 1600 mAh (GP) 7.7 Wh 3 hr 38 mins 365
Olympus C-5050 Zoom 4 x AA NiMH 1600 mAh (GP) 7.7 Wh 3 hr 48 mins 380
Casio EXILIM EX-P700 NP-40 4.5 Wh 3 hr 48 mins 385
Sony DSC-S85 NP-FM50 8.6 Wh 3 hr 50 mins 400
Sony DSC-F717 NP-FM50 8.6 Wh 4 hr 02 mins 405
Pentax Optio 750Z D-LI7 6.6 Wh 4 hr 03 mins 415
Sony DSC-V3 NP-FR1 4.4 Wh 4 hr 05 mins 415
Nikon Coolpix 8400 EN-EL7 8.1 Wh 4 hr 09 mins 420
Sony DSC-F707 NP-FM50 8.6 Wh 4 hr 20 mins 440
Fujifilm S7000 Zoom 4 x AA NiMH 1600 mAh (GP) 7.7 Wh 4 hr 23 mins 445
Konica Minolta DiMAGE A2 NP-400 11.1 Wh 4 hr 26 mins 450
Canon PowerShot G3 BP-511 8.1 Wh 4 hr 32 mins 455
Canon PowerShot G5 BP-511 8.1 Wh 4 hr 33 mins 460
Pentax Optio 550 D-LI7 6.6 Wh 4 hr 36 mins 465
Minolta DiMAGE A1 NP-400 11.1 Wh 5 hr 02 mins 515
Leica Digilux 2 BP-DC1-E 10.1 Wh 5 hr 05 mins 515
Sony DSC-F828 NP-FM50 8.6 Wh 5 hr 28 mins 540
Fujifilm FinePix S5000 4 x AA NiMH 1600 mAh (GP) 7.7 Wh 5 hr 31 mins 555
Canon PowerShot G6 BP-511A 10.3 Wh 5 hr 38 mins 570
Olympus C-8080 WZ BLM-1 10.8 Wh 5 hr 52 mins 595
Other test notes:
 • LCD monitor is left on during the battery test
 • The camera is powered off half of the time and left on half of the time (switch every 10 iterations)
 • There are now higher capacity AA NiMH batteries available, however in the interests of fair
    comparison we will continue to use our 1600 mAh test set

Kudos Casio, I don't know what you're doing but squeezing three and a half hours out of a set of NiMH AA's is amazing. As you can see the QV-4000 appears to have some of the best power management of any digital camera we've tested so far, lasting almost as long as Sony's Lithium-Ion powered DSC-S85. Excellent.

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