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Old Feb 19, 2007, 1:53 AM   #1
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I have the Sigma EF500DG ST which is going in for a free re-chip to work with my K10D.

But I couldn't help myself and have now bought the Pentax AF540FGZ, which should arrive in the next week or so.

I have a 3rd party flash diffuser for the EF500 Sigma Flash similar to this one.

I was hoping that it might be able to be used on both flash units.

So my question is ...Does anyone have both of these flashes and if so can they tell me if the flash head dimensions (W X H) are the same or close enough that the one diffuser can be swapped between the two flashes.

Fingers crossed

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Old Feb 19, 2007, 3:58 AM   #2
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if its a bit loose, just use a bit of duct tape
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Old Feb 19, 2007, 6:37 AM   #3
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i just use the bottom of a supplement bottle, works great. sticky velcro works wonders also.

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