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Underwater flash S2000 + Canon g7x


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#1 uffaufo

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Posted 03 January 2017 - 02:57 AM

Hi all -

 

I am new to underwater flash photography - yet not new to [underwater] photography.

 

I am trying to use 2 x Inon S2000 with a Canon G7X. I do NOT have optical cables and the flash are triggered wirelessly.

 

I am using this setup above water to get acquainted with it, but I am not getting the results I want/expect to see.

 

I have tried to set the Canon G7X to manual flash, but pictures get blown out. For the beginning I would like to stay away from manual mode.

Therefore, I set the S2000 to S-TTL and the Canon G7X onboard flash as AUTO. Pictures come out darkish, and most importantly, as I change the S2000 power output (turning the EV dial) I do not see any relevant change in the picture output, that is no change in ISO, time and aperture.

 

(The camera *seems* not to use any pre-flash to adjust exposure but I might be wrong).

 

What am I doing wrong?

 

 

 

 



#2 ameyer

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Posted 03 January 2017 - 06:36 AM

Hi,
 
I would try it again by using a fibre-optic cable.
Setup on Camera with Auto is correct.
 
Link to the compatibility chart from Inon for the S2000:
 
http://www.inon.jp/p...nt=38159:2.JPG]
 
Kind regards,
Andreas

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#3 uffaufo

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Posted 03 January 2017 - 08:44 AM

Hello Andreas,

 

thanks a lot for your reply!

 

I was hoping to save some money at the beginning and try not to buy optical cables. I wanted to divest on underwater photography equipment and went for a Meikon housing, and honestly I don't know which cables are compatible with it (optical D-cable type L or LL for the flash, but I don't know the housing endpoint).

 

From this chart, it looks like the two should be working also wirelessly:

 

http://www.inon.jp/p...l/wireless.html

 

I'll try to do some more tests...



#4 uffaufo

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Posted 03 January 2017 - 08:50 AM

I have tried again and placed the strobe in such a manner that its light sensor was 2cm in front of the camera flash.

 

I turned the EV dial on the flash but I always get the same exposure on the camera...


Edited by uffaufo, 03 January 2017 - 08:51 AM.


#5 Timz

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Posted 09 January 2017 - 04:42 PM

what abt ur camera exposure setting?? Is it on manual, Av, S, P or Auto..?

What abt the magnet switch on the S2000?

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#6 uffaufo

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Posted 25 March 2017 - 02:02 AM

Hi guys,

 

I think I could use a good help from you as I am lost. I am leaving soon for Seychelles and as of now I cannot operate the flash correctly.

 

I have done a test using a Olympus EM5 Mark II with flash set on AUTO.

The S2000 was also set to STTL.

I have done 3 shots facing a mirror with the second lever set to B (12 o'clock) that should be with no exposure compensation, then turning clockwise at position 3 o'clock (decreasing flash power output) and then turning it counter-clockwise at position 9 o'clock (to increase power output). All the 3 pictures came out exactly identical with no change in aperture or speed or ISO:

 

https://goo.gl/photo...oZxS3WLjeFK6as8

https://goo.gl/photo...xjGvAzaFsDvMRC8

https://goo.gl/photos/bRV2SeLZvmwuzRxi9 

 

What am I doing wrong? Any help is going to be highly appreciated!


Edited by uffaufo, 25 March 2017 - 02:19 AM.