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Old Oct 22, 2002, 1:24 PM   #1
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Default FLASH FOR CANON A40

I realize the silliness of the question, as Canon Powershot A40 doesn't have an external flash adapter, but... Is there any way to use additional flash with it? As much as I like this camera, its broad functionality, relatively low price, decent picture quality (in good light) etc. I find the flash rather weak, even for a small compact camera like A40.

Thanks in advance, :?:
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Old Oct 22, 2002, 4:44 PM   #2
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Default Re: FLASH FOR CANON A40

Quote:
Originally Posted by Matthew Toronto
I realize the silliness of the question, as Canon Powershot A40 doesn't have an external flash adapter,
No question is silly Matthew

Quote:
Originally Posted by Matthew Toronto
... Is there any way to use additional flash with it
There is a way , always.
You can use any external flash in manual mode , or auto-aperture mode ( called auto-thyristor mode) . The external flash is triggered (by the built in camera flash ) by a “slave cell” .

My question (b4 going any further) :
1) does your cam “preflash” ? ( ie flashes 2 or 3 times at each shot)
2) Does your cam have manual exposure mode?
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Old Oct 25, 2002, 12:58 PM   #3
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You might want to look at a canon board http://photography-on-the.net/forum/index.php. They have a forum just for small canon cameras including A40
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Old Nov 11, 2002, 4:52 PM   #4
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Default Re: FLASH FOR CANON A40

Quote:
Originally Posted by KCan
Quote:
Originally Posted by Matthew Toronto
I realize the silliness of the question, as Canon Powershot A40 doesn't have an external flash adapter,
No question is silly Matthew

Quote:
Originally Posted by Matthew Toronto
... Is there any way to use additional flash with it
There is a way , always.
You can use any external flash in manual mode , or auto-aperture mode ( called auto-thyristor mode) . The external flash is triggered (by the built in camera flash ) by a “slave cell” .

My question (b4 going any further) :
1) does your cam “preflash” ? ( ie flashes 2 or 3 times at each shot)
2) Does your cam have manual exposure mode?
To Anwser this camera for him.. (tryed it in the store)

1. Yes the camera has a preflash.. 2 flashs.... The last flash takes the picture..

2. And if I remember the camera does have a manual exposure mode.
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Old Nov 18, 2002, 11:41 AM   #5
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Quote:
Originally Posted by plschwartz
You might want to look at a canon board http://photography-on-the.net/forum/index.php. They have a forum just for small canon cameras including A40
Powershot A40 ain't no SMALL camera
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Old Nov 18, 2002, 11:45 AM   #6
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Default Re: FLASH FOR CANON A40

Quote:
Originally Posted by KCan

There is a way , always.
You can use any external flash in manual mode , or auto-aperture mode ( called auto-thyristor mode) . The external flash is triggered (by the built in camera flash ) by a “slave cell” .

My question (b4 going any further) :
1) does your cam “preflash” ? ( ie flashes 2 or 3 times at each shot)
2) Does your cam have manual exposure mode?
yes it does have the manula mode and the preflash. I've used external flash manually with long exposure times, but don't know how ot use it with shutter speeds under 1 sec.

Thanks :roll:
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Old Nov 18, 2002, 10:41 PM   #7
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Digital_User, thanks

Matthew,
The reason of my 2 questions is to determine how you can use an external flash "normally" ( ie without having to use too slow shutter speed as you had to use )

With the 3 facts:
1) manual exposure possible;
2) your cam does a preflash ( can not force single flash) ;
3) Your cam does not have a pc sync terminal , nor a hot shoe ,

Your only good bet , IMO, is using an external flash with auto-aperture capability ( manual mode only flash is too tedious , doesn't worth) The flash is then triggered by the camera flash via a Wein (spell??) device ( they made one that trigger the flash at the second burst received)

You can also use the "aged" SR Electronics "Digislave" , but it"s a more limited choice since you can use the Wein device and choose the flash that suits your need ( Make, style, power ...)

With the external flash in auto-aperture mode, you set the camera aperture in accordance with the setting on the flash ( they have 3,4,5,6,7 settings depending on flash) and that's it. The flash will cut off automatically at the right level ( that's why they call them auto-thyristor flashes as well)
Your setting of shutter speed then determine the background exposure. Of course, don't go too low , the background then will go blur . 1/30 sec is a slow limit not to go further IMO.

Note: the flash preflash 2 times ( rather than 1) before the "right one" probably in "red eye reduction mode" . So if you use as I describe, set the "red eyes reduction" off .

Good luck

PS: On a "academic" tone, you could take a look at this , I made it to do the job of the new "Wein device", and more .
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Old Nov 18, 2002, 11:04 PM   #8
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FYI:
http://www.stevesforums.com/phpBB2/viewtopic.php?t=2433

Wein website:
http://www.weinproducts.com/safesyncs.htm
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Old Nov 20, 2002, 6:18 PM   #9
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Nope I tryed that as well KCan.... It was not in Red eye mode.. When in Red eye mode I think the Flash lights up or something.. I had the Fash set to "Always on" and it still did that Pre Flash thing..
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Old Nov 20, 2002, 9:37 PM   #10
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Digital_user,

I don't know the camera, if it preflash once ( total 2 flash, as I understood) it gonna work .
(In the case of the D7, it flashes 2 times total in normal mode , and 3 times total in red eye reduction mode.)
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