Interesting and well done.
Regards
Jens

Jens Bladt
http://www.jensbladt.dk
+45 56 63 77 11
+45 23 43 85 77
Skype: jensbladt248

-----Oprindelig meddelelse-----
Fra: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] vegne af Godfrey
DiGiorgi
Sendt: 14. juli 2006 00:12
Til: [email protected]
Emne: follow up on DS speed test


I bought a couple of Transcend 150x 2G SD cards (at $40 apiece, I
couldn't resist).
So I figured I'd revisit the timings we played with in May ...

There is an improvement over 80x cards, not so much for RAW but
substantial if capturing in JPEG *** format.

Test #1 - set the camera on RAW capture, Manual exposure, Manual
focus, continuous drive mode. Set exposure and focus. Set timer to 2
min 15 second. Start timer, use the remote release to release the
shutter continuously starting at 2 minute mark, let go of the release
at the 1 minute mark, then make another exposure at the moment the
write light goes out.

Results:
24 exposures in sequence, .4 exposure per second or 2.5 seconds per
exposure average.
finish write of full buffer in ~16 seconds
Test #2 - set the camera on JPEG *** capture, Manual exposure, Manual
focus, continuous drive mode. Set exposure and focus. Set timer to 2
min 15 second. Start timer, use the remote release to release the
shutter continuously starting at 2 minute mark, let go of the release
at the 1 minute mark, then make another exposure at the moment the
write light goes out.

Results:
90 exposures in sequence, 1.5 exposure per second or .667 seconds per
exposure average.
finish write of full buffer in ~6 seconds

I found the difference to be most understandable when assembled into
a stop-frame video ... The two QuickTime movies are linked on this page:
   http://homepage.mac.com/godders/Pentax-DS-150x-timing/

(QuickTime movies should play in a separate window when you click the
links ... tested on Mac OS X in Safari and FireFox. Otherwise, they
should download to your system and you can play them with the
QuickTime Player. They are ~ 400K and ~ 700K in size.)

enjoy
Godfrey

On May 24, 2006, at 12:02 PM, "Shel Belinkoff" wrote:

> With the istDS, using a Transcend 80X card, shooting @ 1/125 sec, I
> got 22
> raw exposures in 56 seconds, which works out to an average of just
> over 1
> frame every 2.5 seconds.
>
>> Easy way to determine the camera/card capabilities (whether it is DS
>> or DL, or any other model) is to set it up at a reasonable shutter
>> speed in continuous mode and shoot a clock with a sweep second hand.
>> I did this for the DS with Sandisk Ultra II cards ...
>>
>>    http://homepage.mac.com/godders/speedtest


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