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Scott Wood

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Has anyone found a remote slave flash that has the capability to synchronize with an S-100 Powershot's internal flash? One that fires the pre-flash and the power-flash in synchronization, so that the exposures are calculated correctly in the camera. This camera's flash needs help! Thanks.--Scott
L.A., CA
 
Scott,

I don't have the S-100 but I do own the S-10 which has a similarly weak flash with no hot shoe or pc sync available. I ended up buying the Digi-Slave SA-10 slave trigger from http://www.srelectronics.com/ . It is a stand-alone slave trigger that plugs into my Vivitar 283 or 285 flash and trips the off-camera flash on the second flash (not the pre-flash) which is what you need on the S-100.

Unfortunately, neither the S-10 or S-100 will properly meter the off-camera flash since they rely on the pre-flash to set the camera to the proper aperture and shutter speed. What I do is use the variable power module on the Vivitar flash and just adjust it using the digital preview if the first shot doesn't look quite right. This doesn't work very well if your subject isn't stationary but I don't know of any other solution.

You can read a review of the Digi-Slaves at Steve's Digicams at:
http://www.steves-digicams.com/diginews.html .

I hope you find this helpful.

Kurt
Scott Wood said:
Has anyone found a remote slave flash that has the capability to
synchronize with an S-100 Powershot's internal flash? One that
fires the pre-flash and the power-flash in synchronization, so that
the exposures are calculated correctly in the camera. This
camera's flash needs help! Thanks.
--
Scott
L.A., CA
Click to expand...
 
Kurt Sonderegger said:
I don't have the S-100 but I do own the S-10 which has a similarly
weak flash with no hot shoe or pc sync available. I ended up
buying the Digi-Slave SA-10 slave trigger from
http://www.srelectronics.com/ . It is a stand-alone slave trigger
that plugs into my Vivitar 283 or 285 flash and trips the
off-camera flash on the second flash (not the pre-flash) which is
what you need on the S-100.

Unfortunately, neither the S-10 or S-100 will properly meter the
off-camera flash since they rely on the pre-flash to set the camera
to the proper aperture and shutter speed. What I do is use the
variable power module on the Vivitar flash and just adjust it using
the digital preview if the first shot doesn't look quite right.
This doesn't work very well if your subject isn't stationary but I
don't know of any other solution.

You can read a review of the Digi-Slaves at Steve's Digicams at:
http://www.steves-digicams.com/diginews.html .

I hope you find this helpful.

Kurt
Scott Wood said:
Has anyone found a remote slave flash that has the capability to
synchronize with an S-100 Powershot's internal flash? One that
fires the pre-flash and the power-flash in synchronization, so that
the exposures are calculated correctly in the camera. This
camera's flash needs help! Thanks.
--
Scott
L.A., CA
Click to expand...
Click to expand...
Kurt,

Thanks for the response. I am aware of the flashes and slaves that ignore the first flash. I researched them last fall, when I bought the S100. I thought maybe by now someone would have done the job right, and have a product out. The world needs it! A web search didn't turn one up. Guess I'll try again in 6 months!

Scott
 
Scott Wood said:
Kurt Sonderegger said:
I don't have the S-100 but I do own the S-10 which has a similarly
weak flash with no hot shoe or pc sync available. I ended up
buying the Digi-Slave SA-10 slave trigger from
http://www.srelectronics.com/ . It is a stand-alone slave trigger
that plugs into my Vivitar 283 or 285 flash and trips the
off-camera flash on the second flash (not the pre-flash) which is
what you need on the S-100.

Unfortunately, neither the S-10 or S-100 will properly meter the
off-camera flash since they rely on the pre-flash to set the camera
to the proper aperture and shutter speed. What I do is use the
variable power module on the Vivitar flash and just adjust it using
the digital preview if the first shot doesn't look quite right.
This doesn't work very well if your subject isn't stationary but I
don't know of any other solution.

You can read a review of the Digi-Slaves at Steve's Digicams at:
http://www.steves-digicams.com/diginews.html .

I hope you find this helpful.

Kurt
Scott Wood said:
Has anyone found a remote slave flash that has the capability to
synchronize with an S-100 Powershot's internal flash? One that
fires the pre-flash and the power-flash in synchronization, so that
the exposures are calculated correctly in the camera. This
camera's flash needs help! Thanks.
--
Scott
L.A., CA
Click to expand...
Click to expand...
Kurt,

Thanks for the response. I am aware of the flashes and slaves that
ignore the first flash. I researched them last fall, when I bought
the S100. I thought maybe by now someone would have done the job
right, and have a product out. The world needs it! A web search
didn't turn one up. Guess I'll try again in 6 months!

Scott
Click to expand...
You can try using TWO slaves (identical) - one flashing with canon's first "pre-flash" and another one flashing with the second flash. That can help.
 
I was thinking about that, but could not figure out how that is possible. These slave flashes are only triggered by detecting the changes of the amount of lighting in the environment, as I understand it. How do you prevent the slave flash intended for the second flash (the real one) from being triggered by the first flash (the pre-flash)? I would think both slave will be triggered by the pre-flash. Please provide us some more details, Shustoff. Thanks.

Charles
Shustoff said:
Scott Wood said:
Kurt Sonderegger said:
I don't have the S-100 but I do own the S-10 which has a similarly
weak flash with no hot shoe or pc sync available. I ended up
buying the Digi-Slave SA-10 slave trigger from
http://www.srelectronics.com/ . It is a stand-alone slave trigger
that plugs into my Vivitar 283 or 285 flash and trips the
off-camera flash on the second flash (not the pre-flash) which is
what you need on the S-100.

Unfortunately, neither the S-10 or S-100 will properly meter the
off-camera flash since they rely on the pre-flash to set the camera
to the proper aperture and shutter speed. What I do is use the
variable power module on the Vivitar flash and just adjust it using
the digital preview if the first shot doesn't look quite right.
This doesn't work very well if your subject isn't stationary but I
don't know of any other solution.

You can read a review of the Digi-Slaves at Steve's Digicams at:
http://www.steves-digicams.com/diginews.html .

I hope you find this helpful.

Kurt
Scott Wood said:
Has anyone found a remote slave flash that has the capability to
synchronize with an S-100 Powershot's internal flash? One that
fires the pre-flash and the power-flash in synchronization, so that
the exposures are calculated correctly in the camera. This
camera's flash needs help! Thanks.
--
Scott
L.A., CA
Click to expand...
Click to expand...
Kurt,

Thanks for the response. I am aware of the flashes and slaves that
ignore the first flash. I researched them last fall, when I bought
the S100. I thought maybe by now someone would have done the job
right, and have a product out. The world needs it! A web search
didn't turn one up. Guess I'll try again in 6 months!

Scott
Click to expand...
You can try using TWO slaves (identical) - one flashing with
canon's first "pre-flash" and another one flashing with the second
flash. That can help.
Click to expand...
 
First flash (for pre-flash) is an ordinary slave flash or DSF-1s flash with the "second flash trigger" function turned OFF. The second slave is DSF-1s flash with the "second flash trigger" function turned ON.
Charles Chien said:
Charles
Shustoff said:
Scott Wood said:
Kurt Sonderegger said:
I don't have the S-100 but I do own the S-10 which has a similarly
weak flash with no hot shoe or pc sync available. I ended up
buying the Digi-Slave SA-10 slave trigger from
http://www.srelectronics.com/ . It is a stand-alone slave trigger
that plugs into my Vivitar 283 or 285 flash and trips the
off-camera flash on the second flash (not the pre-flash) which is
what you need on the S-100.

Unfortunately, neither the S-10 or S-100 will properly meter the
off-camera flash since they rely on the pre-flash to set the camera
to the proper aperture and shutter speed. What I do is use the
variable power module on the Vivitar flash and just adjust it using
the digital preview if the first shot doesn't look quite right.
This doesn't work very well if your subject isn't stationary but I
don't know of any other solution.

You can read a review of the Digi-Slaves at Steve's Digicams at:
http://www.steves-digicams.com/diginews.html .

I hope you find this helpful.

Kurt
Scott Wood said:
Has anyone found a remote slave flash that has the capability to
synchronize with an S-100 Powershot's internal flash? One that
fires the pre-flash and the power-flash in synchronization, so that
the exposures are calculated correctly in the camera. This
camera's flash needs help! Thanks.
--
Scott
L.A., CA
Click to expand...
Click to expand...
Kurt,

Thanks for the response. I am aware of the flashes and slaves that
ignore the first flash. I researched them last fall, when I bought
the S100. I thought maybe by now someone would have done the job
right, and have a product out. The world needs it! A web search
didn't turn one up. Guess I'll try again in 6 months!

Scott
Click to expand...
You can try using TWO slaves (identical) - one flashing with
canon's first "pre-flash" and another one flashing with the second
flash. That can help.
Click to expand...
Click to expand...
 
Thanks for the information! It makes sense now. I was wondering what is the difference between a regular slave and a "digital" slave.

One last piece of puzzle though on this... Is the camera expecting pre-flash to be a only a portion of amount of flash? If that is the case, how do you measure what ratio it is compared to the full-blown power flash? And, how then do you set it on the first DSF-1s to do that?

Thanks again for your information.
Shustoff said:
Charles Chien said:
Charles
Shustoff said:
Scott Wood said:
Kurt Sonderegger said:
I don't have the S-100 but I do own the S-10 which has a similarly
weak flash with no hot shoe or pc sync available. I ended up
buying the Digi-Slave SA-10 slave trigger from
http://www.srelectronics.com/ . It is a stand-alone slave trigger
that plugs into my Vivitar 283 or 285 flash and trips the
off-camera flash on the second flash (not the pre-flash) which is
what you need on the S-100.

Unfortunately, neither the S-10 or S-100 will properly meter the
off-camera flash since they rely on the pre-flash to set the camera
to the proper aperture and shutter speed. What I do is use the
variable power module on the Vivitar flash and just adjust it using
the digital preview if the first shot doesn't look quite right.
This doesn't work very well if your subject isn't stationary but I
don't know of any other solution.

You can read a review of the Digi-Slaves at Steve's Digicams at:
http://www.steves-digicams.com/diginews.html .

I hope you find this helpful.

Kurt
Scott Wood said:
Has anyone found a remote slave flash that has the capability to
synchronize with an S-100 Powershot's internal flash? One that
fires the pre-flash and the power-flash in synchronization, so that
the exposures are calculated correctly in the camera. This
camera's flash needs help! Thanks.
--
Scott
L.A., CA
Click to expand...
Click to expand...
Kurt,

Thanks for the response. I am aware of the flashes and slaves that
ignore the first flash. I researched them last fall, when I bought
the S100. I thought maybe by now someone would have done the job
right, and have a product out. The world needs it! A web search
didn't turn one up. Guess I'll try again in 6 months!

Scott
Click to expand...
You can try using TWO slaves (identical) - one flashing with
canon's first "pre-flash" and another one flashing with the second
flash. That can help.
Click to expand...
Click to expand...
Click to expand...
 
Both slave flashes must produse equal flashes. That will make the camera "think" that there is a constant source of light instead of slaves. That means that both slaves must be in MANUAL moode - no automatic.
Charles Chien said:
One last piece of puzzle though on this... Is the camera expecting
pre-flash to be a only a portion of amount of flash? If that is the
case, how do you measure what ratio it is compared to the
full-blown power flash? And, how then do you set it on the first
DSF-1s to do that?

Thanks again for your information.
Shustoff said:
Charles Chien said:
Charles
Shustoff said:
Scott Wood said:
Kurt Sonderegger said:
I don't have the S-100 but I do own the S-10 which has a similarly
weak flash with no hot shoe or pc sync available. I ended up
buying the Digi-Slave SA-10 slave trigger from
http://www.srelectronics.com/ . It is a stand-alone slave trigger
that plugs into my Vivitar 283 or 285 flash and trips the
off-camera flash on the second flash (not the pre-flash) which is
what you need on the S-100.

Unfortunately, neither the S-10 or S-100 will properly meter the
off-camera flash since they rely on the pre-flash to set the camera
to the proper aperture and shutter speed. What I do is use the
variable power module on the Vivitar flash and just adjust it using
the digital preview if the first shot doesn't look quite right.
This doesn't work very well if your subject isn't stationary but I
don't know of any other solution.

You can read a review of the Digi-Slaves at Steve's Digicams at:
http://www.steves-digicams.com/diginews.html .

I hope you find this helpful.

Kurt
Scott Wood said:
Has anyone found a remote slave flash that has the capability to
synchronize with an S-100 Powershot's internal flash? One that
fires the pre-flash and the power-flash in synchronization, so that
the exposures are calculated correctly in the camera. This
camera's flash needs help! Thanks.
--
Scott
L.A., CA
Click to expand...
Click to expand...
Kurt,

Thanks for the response. I am aware of the flashes and slaves that
ignore the first flash. I researched them last fall, when I bought
the S100. I thought maybe by now someone would have done the job
right, and have a product out. The world needs it! A web search
didn't turn one up. Guess I'll try again in 6 months!

Scott
Click to expand...
You can try using TWO slaves (identical) - one flashing with
canon's first "pre-flash" and another one flashing with the second
flash. That can help.
Click to expand...
Click to expand...
Click to expand...
Click to expand...
 
Yes, it makes perfect sense. Thanks for your help.
Shustoff said:
Charles Chien said:
One last piece of puzzle though on this... Is the camera expecting
pre-flash to be a only a portion of amount of flash? If that is the
case, how do you measure what ratio it is compared to the
full-blown power flash? And, how then do you set it on the first
DSF-1s to do that?

Thanks again for your information.
Shustoff said:
Charles Chien said:
Charles
Shustoff said:
Scott Wood said:
Kurt Sonderegger said:
I don't have the S-100 but I do own the S-10 which has a similarly
weak flash with no hot shoe or pc sync available. I ended up
buying the Digi-Slave SA-10 slave trigger from
http://www.srelectronics.com/ . It is a stand-alone slave trigger
that plugs into my Vivitar 283 or 285 flash and trips the
off-camera flash on the second flash (not the pre-flash) which is
what you need on the S-100.

Unfortunately, neither the S-10 or S-100 will properly meter the
off-camera flash since they rely on the pre-flash to set the camera
to the proper aperture and shutter speed. What I do is use the
variable power module on the Vivitar flash and just adjust it using
the digital preview if the first shot doesn't look quite right.
This doesn't work very well if your subject isn't stationary but I
don't know of any other solution.

You can read a review of the Digi-Slaves at Steve's Digicams at:
http://www.steves-digicams.com/diginews.html .

I hope you find this helpful.

Kurt
Scott Wood said:
Has anyone found a remote slave flash that has the capability to
synchronize with an S-100 Powershot's internal flash? One that
fires the pre-flash and the power-flash in synchronization, so that
the exposures are calculated correctly in the camera. This
camera's flash needs help! Thanks.
--
Scott
L.A., CA
Click to expand...
Click to expand...
Kurt,

Thanks for the response. I am aware of the flashes and slaves that
ignore the first flash. I researched them last fall, when I bought
the S100. I thought maybe by now someone would have done the job
right, and have a product out. The world needs it! A web search
didn't turn one up. Guess I'll try again in 6 months!

Scott
Click to expand...
You can try using TWO slaves (identical) - one flashing with
canon's first "pre-flash" and another one flashing with the second
flash. That can help.
Click to expand...
Click to expand...
Click to expand...
Click to expand...
Click to expand...
 
Test pictures with DSF-1s (camera - Canon A50, dont criticize the quality - it was made in 3 minutes):



1 2
3 4

1. Built-in flash only.

2. Quantarray MS-1 slave flash ($30) - regular slave flash. It prodused a flash during camera's pre-flash and messed up automatic exposition - picture is underexposed.

3. DSF-1s flash ($99). It prodused a flash during camera's second (main) flash. As a result the object was illuminated by full power of both - built-in and slave flash, so the picture is overexposed.

4. MS-1 and DSF-1s slaves working together. The first one syncronized with the pre-flash, the second one - with the main flash. As a result the camera lowered the power of built-in flash and the exposition is correct.

Conclusion: If you want your camera's automatic to work correct, use TWO slave flashes (preferably with the same guide number and directed the same direction), one to syncronize with pre-flash, another to sycnronize with the main flash.

P.S. Assembling quality of DSF-1s flash is TERRIBLE. Somebody can make a good money making small pocket-size slave-flash with two capacitors - to repeat both pre-flash and main flash after the camera. The market is big enough - all pocket-size digital camera users. And - dont forget to send me a sample - as a royalty. :)
 
Sorry - stupid Geocities policy.... Doesn't allow JPGs
try this link:
http://www.geocities.com/dmitry_shuster/sample.html

The results are consistent. Using only one slave requires expocorrection. Using two slaves helps avoid expocorrection in SOME conditions (for example if you place the slaves too close to the object or they are too powerfull, even with the built-in flash on minimum power level the picture will be overexposed.)
Shustoff said:
Test pictures with DSF-1s (camera - Canon A50, dont criticize the
quality - it was made in 3 minutes):



1 2
3 4

1. Built-in flash only.
2. Quantarray MS-1 slave flash ($30) - regular slave flash. It
prodused a flash during camera's pre-flash and messed up automatic
exposition - picture is underexposed.
3. DSF-1s flash ($99). It prodused a flash during camera's second
(main) flash. As a result the object was illuminated by full power
of both - built-in and slave flash, so the picture is overexposed.
4. MS-1 and DSF-1s slaves working together. The first one
syncronized with the pre-flash, the second one - with the main
flash. As a result the camera lowered the power of built-in flash
and the exposition is correct.

Conclusion: If you want your camera's automatic to work correct,
use TWO slave flashes (preferably with the same guide number and
directed the same direction), one to syncronize with pre-flash,
another to sycnronize with the main flash.

P.S. Assembling quality of DSF-1s flash is TERRIBLE. Somebody can
make a good money making small pocket-size slave-flash with two
capacitors - to repeat both pre-flash and main flash after the
camera. The market is big enough - all pocket-size digital camera
users. And - dont forget to send me a sample - as a royalty. :)
Click to expand...
 
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