Web Analytics RiceHigh's Pentax Blog: K-3 Flash Issues

Monday, March 10, 2014

K-3 Flash Issues

1. Unacceptable prolonged shutter delay in P-TTL mode:

http://www.pentaxforums.com/forums/172-pentax-k-3/242556-k-3-delay-when-using-flash.html

Some K-3 users reported that the delay was particularly long, noticeably much longer than that of the K-5, which was not that noticeable.

Another thread at the Taiwanese PFC Pentax forum also states the same thing:

http://www.pentaxfans.net/thread-143957-1-1.html
(in Traditional Chinese)

A petition is being raised.

2. EXIF is not stored correctly for whether the flash is turned on or off:

http://www.pentaxforums.com/forums/172-pentax-k-3/241800-k-3-flash-issue.html

Time (UTC +0800):
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Comments (14)

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Andrés's avatar

Andrés · 575 weeks ago

Please Rice, tell us about your A7 light leak issue. Maybe Sony, by firmware update, could stuck exposures slowers than 15sec, at ISO 6400 and up.
My 2 cent for Sony´s users affection.
2 replies · active 575 weeks ago
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pfools's avatar

pfools · 575 weeks ago

I'm impressed. That is a very intelligent response to an issue with the k-3. You are a very creative fan boy.
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Andrés's avatar

Andrés · 575 weeks ago

Is even worst the case of the Sony A7r, because Sony claim it´s weather sealed. If light enters, then water, humidity and dust could enter too.
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jaad75's avatar

jaad75 · 575 weeks ago

2. Did you read that thread?
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Catchalive's avatar - Go to profile

Catchalive · 575 weeks ago

Thank you very much for publishing a link to a thread I created Rice!!!!!! I'm Black_Wizards on PF board!
This prove you can listen to other people when you want.... ;-)
1 reply · active 575 weeks ago
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RiceHigh's avatar - Go to profile

RiceHigh 110p · 575 weeks ago

So it proves that the Pentax user base is really so limited and the world is so small! ;-P
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Bukaj's avatar

Bukaj · 575 weeks ago

Having a K-3 in hand right now, I can agree there is very slight shutter action delay when using onboard flash. It is almost neglible, but it is here. I think it's a firmware issue, since the actuation in all modern cameras is electronic driven, not mechanic. There are few other minor flaws, but most of them will be probably adressed by firmware updates. Otherwise - superb camera. The best APS-C DSLR out there, better choice than basic fullframes like the 6D or D610 for an active outdoor photographer - image quality almost the same (slightly better in low ISO, worse in high), but more feature packed and compact...
1 reply · active 575 weeks ago
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Nobody's avatar

Nobody · 575 weeks ago

>I think it's a firmware issue, since the actuation in all modern cameras is electronic driven, not mechanic

At least partially. There are physical components in the electrical systems that have real physical properties that cannot be reprogrammed: for example, resistors and capacitors. It may be that some of these supplies didn't all have the same tolerances so Pentax opted for a more conservative delay to solve other problems. Dunno.
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Dave's clichés's avatar

Dave's clichés · 575 weeks ago

Thanks for keeping us upto date with this six month old post!
1 reply · active 575 weeks ago
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RiceHigh's avatar - Go to profile

RiceHigh 110p · 575 weeks ago

Yes, this old issue is yet unresolved and is persistent with the latest firmware as complained by some K-3 users - see the second post thread link.
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Massimo Ambrosio's avatar

Massimo Ambrosio · 575 weeks ago

Hi, here Massimo from Italy, i have this problem. Any news?
1 reply · active 575 weeks ago
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RiceHigh's avatar - Go to profile

RiceHigh 110p · 575 weeks ago

I am afraid not.
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Lou's avatar

Lou · 575 weeks ago

Seems to me, some enterprising engineer (RH?) could take a storage oscilloscope and photometer and actually measure the lag time between preflash-flash for the K-3 and earlier K-models. This would put the issue to rest, instead of relying on users' subjective measures of the lag time.
1 reply · active 574 weeks ago
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Lou's avatar

Lou · 574 weeks ago

From the forum whose name won't be mentioned.
It appears the lag is from shutter release to pre-flash. Pre-flash to flash timing is consistent with other cameras (at least the K-30). Occurs with internal and external flash.

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