Russell Boate wrote:
> 
> I am planning on buying a more powerful dediated flash for my A2.  I
> currently use a 300EZ with my shorter lenses and a vivitar 285hv when I need
> a powerful flash.  I am considering a new 540ez or the sigma ef500 super,
> can anyone who has used the sigma for at least a year comment on the
> durability of this flash.  is there anything that I will gain with the sigma
> as it is based on newer technology?
> 

Yes, E-TTL.

You won't realize the benefits until you change from the A2 as it is
compatible with A-TTL.

Depending on the replies you get, you may consider a used 540-EZ

Bob


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