I never use the Sigma without a diffuser of some sort, so the wide angle issue 
isn't an issue for me. Is the angle of view in 35mm terms or APS-C? I'l have to 
look at the Sigma docs. In truth AOV shouldn't be stated in terms of lens focal 
length. 
Paul
 -------------- Original message ----------------------
From: Joseph Tainter <[EMAIL PROTECTED]>
> The Sigma 500DG Super works very well.
> 
> -----
> 
> A consideration (for me) is that the Sigma flash's angle of view starts 
> at 18 mm. Both of the Pentax flashes will cover 16 mm--as in DA 16-45 or 
> DA 16-50.
> 
> The rtf on the *ist D also covered 16 mm. The rtf on the K10D will cover 
> only 18 mm. Another gripe.
> 
> Joe
> 
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