what do ya know? - DPChallenge Forums

06/23/2005 04:38:42 AM · #9

NO.
It's a high power slave. It is completely unconnected to the camera and fires when it detects the main camera flash itself.
It has three power settings (Min, Mid and Max) and also manual (fired using a button on the back) and auto (fires when main flash is detected).

I have one in front of me right now!

Canon PowerShot Pro 90 IS

06/23/2005 12:26:19 PM · #10

BUMP!

coolhar

06/27/2005 01:40:39 PM · #11

Originally posted by RichT8496:

Thanks for that correction Rich. Am I correct to assume that it will work with any flash as it's master?

Gil P

Canon EOS-1Ds Mark II

Canon EF 70-200mm f/2.8L IS USM

06/27/2005 01:47:35 PM · #12

Canon, is there anything they can't do......to increase their sales.

GoldBerry

Canon EOS-5D Mark II

Canon EF 50mm f/1.4 USM

06/27/2005 01:49:16 PM · #13

Originally posted by Gil P:

Canon, is there anything they can't do......to increase their sales.

I know! Point and shoots are getting ridiculously expensive .. or were they always and I just never noticed?

Gil P

Canon EOS-1Ds Mark II

Canon EF 70-200mm f/2.8L IS USM

06/27/2005 01:51:26 PM · #14

Originally posted by GoldBerry:

Originally posted by Gil P:
Canon, is there anything they can't do......to increase their sales.

I know! Point and shoots are getting ridiculously expensive .. or were they always and I just never noticed?

I think that the good ones are still in the 500$+ (cdn) and that more and more El-Cheapos are getting introduced in the line-ups, I say a 3.2mp canon p&s yesterday at 269$cdn. and a 2.0 from some bizarre company @ 99$ !

Sigma 24-70mm f/2.8 EX Aspherical DF for Canon

06/28/2005 06:49:33 AM · #15

Thanks for that correction Rich. Am I correct to assume that it will work with any flash as it's master? [/quote]

Yes, it's simply a matter of the flash detecting the camera's flash so any one will work. However I believe this is optimised for Canon cameras and MAY automatically ignore pre-flash on Canon only. Although I suspect it'll ignore any pre-flash cos it'll just be a matter of tweaking the sensitivity of the sensor.

hankk

Canon EOS-5D

06/28/2005 12:09:39 PM · #16

Originally posted by RichT8496:

Thanks for that correction Rich. Am I correct to assume that it will work with any flash as it's master?

Yes, it's simply a matter of the flash detecting the camera's flash so any one will work. However I believe this is optimised for Canon cameras and MAY automatically ignore pre-flash on Canon only. Although I suspect it'll ignore any pre-flash cos it'll just be a matter of tweaking the sensitivity of the sensor. [/quote]

I thought the pre-flash was used for metering. So wouldn't the slave have to als send a pre-flash so the camera's metering works correctly?

06/29/2005 07:03:46 AM · #17

Nope.
This flash is very basic and has no ability to meter or take metering commands from cameras. If the exposure is too high or low you have the option of Min, Mid and Max power settings - that's it.
Very simple and compact slave triggered solely by detecting the main camera's flash.

06/29/2005 07:20:01 AM · #18

SORRY TO ALL!! I'M COMPLETELY WRONG!!!

This is actually correct:
1)The flash DOES meter the scene.
2)It has power adjustment for tweaking according to the aperture you're using because it doesn't receive data from the main unit.
3)It does ignore pre-flash if it is less than 150ms from main flash and therefore will also work with non-Canon.
4)The manual option on the flash must be held down whilst shooting. This is to avoid the flash being set off by other people's flashes at weddings etc.
5) It is fired when it detects the main flash from the main camera.

All in all it's not as simple as it seems - actually quite crafty and very useful.

Please don't ignore my comments in future - I was just wrong about this one! :-)