Built-in flash and syncro flashes

Hey list,

I hoped to be able to use built-in flash of my K100D to
release BIG 
Electra 80 slave flash units but o my surprise them always
lighted late, 
from my experience I can say they start with main flash
lights goes off 
and only reason they late can be that built-in flash
releases before the 
second curtain, not at 1st curtain as I'd expect. Since
there's nothing 
I can readjust in the menu perhaps only thing is to buy
descent wired 
flash unit for my studio. This would be launched at first
curtain 
opening, by the syncro cable.

-- 
new photos once and again... roman.blakout.net <http://roman.blakout.net
>

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You can't use the K100D (or K10D) built in flash as a
trigger flash  
for slaves, normally, as the P-TTL preflash will fire the
slaves  
early. Best thing to do is to fit a small flash unit with an
IR  
filter over the main tube. That will not pre-flash and will
fire the  
slaves at the right time. Or use an RF wireless flash
trigger.

Godfrey


On Oct 18, 2007, at 12:34 AM, Roman Melihhov wrote:

> I hoped to be able to use built-in flash of my K100D to
release BIG
> Electra 80 slave flash units but o my surprise them
always lighted  
> late,
> from my experience I can say they start with main flash
lights goes  
> off
> and only reason they late can be that built-in flash
releases  
> before the
> second curtain, not at 1st curtain as I'd expect. Since
there's  
> nothing
> I can readjust in the menu perhaps only thing is to buy
descent wired
> flash unit for my studio. This would be launched at
first curtain
> opening, by the syncro cable.


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You could with a pre-A lens attached (which switches the
popup to 
full-power manual instead of P-TTL) but getting small flash
unit with an 
IR filter is probably a better option.

-Adam


Godfrey DiGiorgi wrote:
> You can't use the K100D (or K10D) built in flash as a
trigger flash  
> for slaves, normally, as the P-TTL preflash will fire
the slaves  
> early. Best thing to do is to fit a small flash unit
with an IR  
> filter over the main tube. That will not pre-flash and
will fire the  
> slaves at the right time. Or use an RF wireless flash
trigger.
> 
> Godfrey
> 
> 
> On Oct 18, 2007, at 12:34 AM, Roman Melihhov wrote:
> 
>> I hoped to be able to use built-in flash of my
K100D to release BIG
>> Electra 80 slave flash units but o my surprise them
always lighted  
>> late,
>> from my experience I can say they start with main
flash lights goes  
>> off
>> and only reason they late can be that built-in
flash releases  
>> before the
>> second curtain, not at 1st curtain as I'd expect.
Since there's  
>> nothing
>> I can readjust in the menu perhaps only thing is to
buy descent wired
>> flash unit for my studio. This would be launched at
first curtain
>> opening, by the syncro cable.
> 
> 


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A/F/FA/D-FA lenses all work that way, just take them off the
A  
setting with the aperture ring. DA lenses cannot be taken
off the A  
setting, of course.

The small flash with IR filter works with any lens.

G

On Oct 18, 2007, at 5:28 AM, Adam Maas wrote:

> You could with a pre-A lens attached (which switches
the popup to
> full-power manual instead of P-TTL) but getting small
flash unit  
> with an
> IR filter is probably a better option.
>
> -Adam
>
>
> Godfrey DiGiorgi wrote:
>> You can't use the K100D (or K10D) built in flash as
a trigger flash
>> for slaves, normally, as the P-TTL preflash will
fire the slaves
>> early. Best thing to do is to fit a small flash
unit with an IR
>> filter over the main tube. That will not pre-flash
and will fire the
>> slaves at the right time. Or use an RF wireless
flash trigger.
>>
>> Godfrey
>>
>>
>> On Oct 18, 2007, at 12:34 AM, Roman Melihhov
wrote:
>>
>>> I hoped to be able to use built-in flash of my
K100D to release BIG
>>> Electra 80 slave flash units but o my surprise
them always lighted
>>> late,
>>> from my experience I can say they start with
main flash lights goes
>>> off
>>> and only reason they late can be that built-in
flash releases
>>> before the
>>> second curtain, not at 1st curtain as I'd
expect. Since there's
>>> nothing
>>> I can readjust in the menu perhaps only thing
is to buy descent  
>>> wired
>>> flash unit for my studio. This would be
launched at first curtain
>>> opening, by the syncro cable.


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Actually I think Metz makes some controlled flash (small
ones
unfortunately) which sould work OK with that. They are
supposed to
"learn" the delay between preflash and actual
flash.
Those are obvioulsy made to use an external (small) flash
with P&S
cameras. But the technology seems to exit.

--
Thibault Massart aka Thibouille
----------------------
K10D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ...

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