I don't know what it is but suspect there's something wrong with the way
you're testing because your results are far faster than college age
students and Olympic athletes. Also note that auditory response times
are faster than visual response times.
From this Wiki article <http://en.wikipedia.org/wiki/Mental_chronometry>
"Simple reaction time is the motion required for an observer to respond
to the presence of a stimulus. For example, a subject might be asked to
press a button as soon as a light or sound appears. Mean RT for
college-age individuals is about 160 milliseconds to detect an auditory
stimulus, and approximately 190 milliseconds to detect visual
stimulus.[2][3] The mean reaction times for sprinters at the Beijing
Olympics were 166 ms for males and 189 ms for females, but in one out of
1,000 starts they can achieve 109 ms and 121 ms, respectively."
Chuck Norcutt
On 2/16/2014 12:54 AM, C.H.Ling wrote:
> I use a simple way to check the system response time, run a online
> stopwatch like this one:
>
> http://stopwatch.onlineclock.net/
>
> I ask my wife to press the mouse button, when I hear the click sound
> I press the shutter release. After some testes, the results were
> below 90ms with a few exception due to human error.
>
> This method does not see the LCD display delay (if any) but you can
> also run the stopwatch continously, press the shutter and note the
> reading before the shutter open and compare it with the shot result,
> I see something around 1XXms.
>
> The camera under test was E-PL1 with manual focus and IS turn off.
> The result seems not bad but I don't know if this method really
> works.
>
> I had bad experience shooting birds with E-PL1 and manual Zuikos, the
> shutter delay was too long but problem was solved after I disabled
> the IS.
>
> C.H.Ling ----- Original Message ----- From: Ken Norton To: Olympus
> Camera Discussion Sent: Sunday, February 16, 2014 6:43 AM Subject:
> Re: [OM] E-M5 EVF delay, again
>
>
>> But I think what you've failed to address here is that I've shown
>> that my own reaction time is about 2/3 of the total response time.
>> Even with the shutter shock delay time the camera's response is the
>> smaller part. A DSLR still has to open the mirror before firing the
>> shutter, something the E-M5 doesn't have to do.
>
> That's what I was referring to when I mentioned "the entire 'system'
> reaction time." You are part of that system too. If you wait until
> you see the action to respond to it, you're already too late, no
> matter the technology.
>
--
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