Maybe K10's first "bug"

Started Nov 28, 2006 | Discussions
mikerigel Contributing Member • Posts: 755
Maybe K10's first "bug"

Some of you might have read this already http://forums.dpreview.com/forums/read.asp?forum=1036&message=21047498

but I feel it deserves its own thread, especially if more K10 owners experience it, please post here if you do.

Now, I think it's not a true "bug".... it may be just a protection that won't let you do long exposure in Bulb mode if the battery is halfway depleted.

That makes sense if you think about the equally long "dark frame" the camera is taking after each exposure.

As I mentionned on the other thread, it happened to me again tonight, even though my battery was just charged this morning... it doesn't make sense...
Either way, it's nothing a firmware update can't fix.

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Mike

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blende8 Senior Member • Posts: 1,494
Re: Maybe K10's first "bug"

I think it is a battery thing.
Unload/reload the battery say 5 times and try again.

Helmut Eder
Helmut Eder Regular Member • Posts: 494
Re: Maybe K10's first "bug"

This problem sounds to me like a "voltage droop under high load" problem. In other words, the battery cannot supply the required sustained current for powering the camera, and then the "battery empty" sensor kicks in.

Not an easy firmware fix, as it would have to do with the internal impedance of the battery. Would be interesting to see if this happens when supplying the power through an AC adapter or external power supply.

Just my opinion of course.

-Helmut

mvb123 Veteran Member • Posts: 3,302
auto shut off?

Maybe the auto shut off is set to 30 seconds and it doesn't check whether a picture is being taken? If the auto-shutoff is set to 30 seconds you could try to change that and see what's the effect.. I know, it's not very probable.
--
Menno

eyore New Member • Posts: 14
Re: auto shut off?

Mike,

Perhaps the camera isn't too keen on running out of puff with the mirror up, half way thru a shot? And perhaps that may also be due to your battery still getting to its advertised half-life (being brand new I'm sure!).

Regards,

Inghard Ehrenberg

michael przewrocki Senior Member • Posts: 2,350
Re: Maybe K10's first "bug"

right, when fresh, battery will only give best power after 4-6 first loadings. at least for nimh.
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Bronek Regular Member • Posts: 204
Re: Maybe K10's first "bug"

Mike, do you have SR on? It might be consuming some power while taking exposure, you know.

OP mikerigel Contributing Member • Posts: 755
Re: Maybe K10's first "bug"

michael przewrocki wrote:

right, when fresh, battery will only give best power after 4-6
first loadings. at least for nimh.

Al right, I'll wait then and make further tests.... I hope you're right

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Mike

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OP mikerigel Contributing Member • Posts: 755
Re: auto shut off?

mvb123 wrote:

Maybe the auto shut off is set to 30 seconds and it doesn't check
whether a picture is being taken? If the auto-shutoff is set to 30
seconds you could try to change that and see what's the effect.. I
know, it's not very probable.

Yes, the auto shutt off was on when I did my first 15min test... the camera is smart, it knows when it's taking a picture... so I guess that's not the reason.

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Mike

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OP mikerigel Contributing Member • Posts: 755
Re: Maybe K10's first "bug"

Bronek wrote:

Mike, do you have SR on? It might be consuming some power while
taking exposure, you know.

Yeah I know but no, I don't have it on , since i'm on a tripod.

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Mike

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OP mikerigel Contributing Member • Posts: 755
Re: Maybe K10's first "bug"

Helmut Eder wrote:

This problem sounds to me like a "voltage droop under high load"
problem. In other words, the battery cannot supply the required
sustained current for powering the camera, and then the "battery
empty" sensor kicks in.

So what are you saying ? that we can't use the camera's B mode ?

Why would they include it if the battery can't supply enough power for it ? I never had that problem with my Ds and crv-3...... sigh....

Not an easy firmware fix, as it would have to do with the internal
impedance of the battery. Would be interesting to see if this
happens when supplying the power through an AC adapter or external
power supply.

It should be fine with the AC adapter but that's not always practical when you're in the field....

Just my opinion of course.

thanks Helmut.

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Mike

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Richard N. Allen Senior Member • Posts: 2,001
Re: Maybe K10's first "bug"

I hope this is an isolated problem or one that can be simply corrected.

Has anyone contacted Pentax about the situation (I'm hesitant to call it a problem yet)?

Does it happen with the BG2 (with battery aboard) is used in conjunction with the K10D?
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JensR Forum Pro • Posts: 17,971
Re: Maybe K10's first "bug"

Hi Mike!

Well, I remember some people stating/predicting/hoping that now with the supadupa cool LiIon technology, all battery issues would be gone.
Apparently, not...

Either way, it's nothing a firmware update can't fix.

Umm. #fingerscrossed#

BTW, was it cold at night, this might have led to premature exhausting of the battery?

Jens

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Joe Barnhart Veteran Member • Posts: 3,393
Happened to me, too

I also tried to take a picture with "B" for the astro interested people. I kept the lens cap on and triggered the shutter. 32 seconds later the shutter closes and the battery is flashing. I charged the battery, put it back in, and tried again. Exactly the same result with a freshly-charged battery.

I'm not too worried as I almost never take bulb pictures myself. But it would be inconvenient to need a power supply for long exposures -- especially for the astro people.

OP mikerigel Contributing Member • Posts: 755
Re: Maybe K10's first "bug"

JensR wrote:
Hi Mike!

Well, I remember some people stating/predicting/hoping that now
with the supadupa cool LiIon technology, all battery issues would
be gone.
Apparently, not...

Either way, it's nothing a firmware update can't fix.

Umm. #fingerscrossed#

same here...

BTW, was it cold at night, this might have led to premature
exhausting of the battery?

Well, I'm in Florida.. does that answer your question ?

It was probably around 75 degres F, in the 20's range in celsius... not exactly cold.

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Mike

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Simon de la Court Junior Member • Posts: 46
Re: Maybe K10's first "bug"

You should mail Pentax asap, so if it is a real technical mallfunction they can easiliy fix this

JohnCPentax Contributing Member • Posts: 534
Re: Maybe K10's first "bug"

My K10D did this the first two times I tried a bulb exposure in the office this morning. It would only take a maximum 32 second exposure. However, after reading a post about the auto power off, I changed the setting and now the bulb mode works perfectly. I set the auto power off back to the default setting and it still worked properly from that point on. I have tried two other K10D's in the office and they are not experiencing this issue.

I will keep researching and keep you posted.
--
John C.

OP mikerigel Contributing Member • Posts: 755
Re: Maybe K10's first "bug"

JohnCPentax wrote:

My K10D did this the first two times I tried a bulb exposure in the
office this morning. It would only take a maximum 32 second
exposure. However, after reading a post about the auto power off,
I changed the setting and now the bulb mode works perfectly. I set
the auto power off back to the default setting and it still worked
properly from that point on. I have tried two other K10D's in the
office and they are not experiencing this issue.

I will keep researching and keep you posted.
--
John C.

Thank you John for your input!

i will try again tonight with the "auto power off" turned off and see if it makes a difference.

See, I did a 15 minutes exposure 3 nights ago, and the "auto off" was on... weird.
Thanks again.

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Mike

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mvb123 Veteran Member • Posts: 3,302
Re: auto shut off?

mikerigel wrote:

mvb123 wrote:

Maybe the auto shut off is set to 30 seconds and it doesn't check
whether a picture is being taken? If the auto-shutoff is set to 30
seconds you could try to change that and see what's the effect.. I
know, it's not very probable.

Yes, the auto shutt off was on when I did my first 15min test...
the camera is smart, it knows when it's taking a picture... so I
guess that's not the reason.

Instead of guessing you could try it out, doesn't take a lot of time..
--
Menno

OP mikerigel Contributing Member • Posts: 755
Re: auto shut off?

mvb123 wrote:

Instead of guessing you could try it out, doesn't take a lot of time..
--
Menno

You don't understand, I'm not guessing, I already did take a 15 minutes exposure with it ON and it worked, that's why I said that should not be the reason.

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Mike

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