For those who have this flash and are planning on buying a Pentax K100D, there's a free upgrade Sigma is providing for this flash: http://www.photographyblog.com/index.php/weblog/comments/sigma_upgrades_flashguns_for_pentax_k100d_dslr/
This must mean that Pentax has slightly changed the flash communication protocol for their latest DSLR's. Interesting... -- Mark Roberts Photography & Multimedia www.robertstech.com 412-687-2835 -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net

