Author Topic: A350 wireless flash with strobe flash  (Read 2179 times)

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Offline pusaputo

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A350 wireless flash with strobe flash
« on: July 29, 2016, 05:54:25 PM »
Just asking whether there is a problem with using A350 wireless flash to trigger monolight strobe flashes.

I was trying to do high key portrait photography and there are two strobe flashes with barn doors in the background to burn the background and limiting light bleeding on the model. Meanwhile, a strobe flash is also in front to just rightly expose the model subject.

With the Sony A350 in wireless, it should flash trigger the rest resulting in all three strobes to fire at the same time - along with the shutter.

My problem is that it seems that the flashes seem to fire late (or earlier) than the shutter. Hence the picture does not achieve the high key at all.

Since the all strobes has settings for delay, I tried all the settings (ensuring all three are timed at the same delays after sensing the wireless flash trigger), one of those settings should be just right. But still no luck and the picture comes underexposed.  Any suggestions? Explanations? I use the same set up with my A7R mirrorless without any problem.

Offline Faldrax

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Re: A350 wireless flash with strobe flash
« Reply #1 on: July 29, 2016, 09:18:41 PM »
How are you getting the A350 to wirelessly trigger the strobes?

The 'wireless' mode is for using the pop up flash to signal off camera Sony (or 'D' type Minolta) flashguns - and uses a special set of coded pulses to do so.

If the strobes have a built in optical trigger you should be able to use the pop up flash to trigger them, but in that case you need to use it as 'fill' rather than wireless, and use negative flash compensation to minimise the output of the pop up flash.

You should also check red eye reduction is turned off (as this uses a pre-shutter flash which could trigger strobes early).
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Offline chappo1

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Re: A350 wireless flash with strobe flash
« Reply #2 on: July 30, 2016, 12:02:54 AM »
Faldrax is correct.  I only really know Sony and Minolta but believe all the brands have a similar modus operandi for their wireless off camera flashes.
The wireless mode works just as Faldrax described it.
I have a set of cheap strobes (2 of them set to slave mode) and my Son in Law has tried triggering with his on board flash on his Canon.  They trigger but he has not been able to get the synch correct much as you describe.
I have two Pixel Opas transceivers for Sony and use these.
I will be wordy in case you are not familiar with the term.
Transceiver means either unit can be sender or receiver.  They have the Minolta flash mount and will fit atop your A350. ( I use mine with a convertor to the new Sony ISO mount.)  From memory they were about $160 Australian dollars for the two.  I connect the receiver to one strobe and the other two fire on slave mode.  Works perfectly all the time.
You can buy other sender and receiver sets ranging from a few tens of dollars to a few hundreds of dollars.

Welcome to the forum and we hope you stick around.  If you need any more just reply....john
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Offline pusaputo

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Re: A350 wireless flash with strobe flash
« Reply #3 on: July 30, 2016, 02:34:45 PM »
Thank you for all the input. I thought at first that the wireless flash mode of the A350 can be used as optical trigger for the other three as slaves. Actually, I do have a transceiver system with my A7R mirrorless with one being master strobe and the other two are slaves like the system described by chappo1. The shoe of the A7R is different from the A350 and I guess I just have to get a separate system for the A350.

Thanks once again for answering my question.

Offline chappo1

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Re: A350 wireless flash with strobe flash
« Reply #4 on: July 31, 2016, 12:36:37 AM »
Actually all you need is a "Minolta hot shoe convertor" to go atop the A350 to convert to new Sony ISO mount.
I have copied in the link but if it does not work just put the Minolta hot shoe convertor into your browser and see what comes up.  I have a number of these little convertors. 
I have not studied the A350 but if it has a PC outlet, you can cable trigger one strobe and slave fire the others. The convertor from Minolta> ISO I bought for a few dollars (certainly less than $10) has a PC connector on it.  If you mount that to the top of the A350 and connect the PC outlet from that to your closest strobe, that will fire them as well.

john


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Offline pusaputo

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Re: A350 wireless flash with strobe flash
« Reply #5 on: July 31, 2016, 01:11:35 AM »
As I was just browsing on the transceivers, I ran across the hot shoe converter. I did buy one for just 10 dollars - the pixel 325. Thanks once again, John....

Fred