Olympus-OM
[Top] [All Lists]

Re: [OM] E-M5 EVF delay, again

Subject: Re: [OM] E-M5 EVF delay, again
From: "C.H.Ling" <ch_photo@xxxxxxxxxxxxx>
Date: Sun, 16 Feb 2014 22:13:08 +0800
Sorry, I just found the counter started to count after mouse release. We did 
some testes again with release click sound and it came to a more reasonable 
150 and 170ms.

C.H.Ling

----- Original Message ----- 
From: "C.H.Ling" <ch_photo@xxxxxxxxxxxxx>


>I think anyone can perform this simple test, if there is any problem it is
> computer delay. The only thing I did was listen to the mouse click and 
> press
> shutter button, I don't know when my wife is going to press the button.
>
> At the mean time I can't see any delay with the counter onscreen when
> pressing the mouse button, may be my eyes are too slow?
>
> I just also tried another counter:
>
> http://sourceforge.net/projects/countdowntimer/
>
> This time I got 80ms for the first test and 50ms for the 2nd test.
>
> BTW, the test should be performed with high shutter speed, I use 1/500s at
> ISO3200.
>
> C.H.Ling
>
> ----- Original Message ----- 
> From: Chuck Norcutt
> To: Olympus Camera Discussion
> Sent: Sunday, February 16, 2014 9:06 PM
> Subject: Re: [OM] E-M5 EVF delay, again
>
>
> 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.
>>
> -- 
> _________________________________________________________________
> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
> Themed Olympus Photo Exhibition: http://www.tope.nl/
>
> -- 
> _________________________________________________________________
> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
> Themed Olympus Photo Exhibition: http://www.tope.nl/
> 

-- 
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/

<Prev in Thread] Current Thread [Next in Thread>
Sponsored by Tako
Impressum | Datenschutz