The *ist will work with screw mount lenses in aperture
priority, you set the aperture, the camera sets the
rest. As for E-TTL, it's P-TTL here and it can be
turned off ( unlike the canon ).
P-TTL works only with lenses type A (and F, FA). And too with K and M lenses modified for matrix metering; two links: Mark Roberts site: http://www.robertstech.com/pentax.htm Mine (French, you can translate by http://babel.altavista.com/tr http://perso.wanadoo.fr/krg/ http://perso.wanadoo.fr/krg/Photo/multizone.htm
Michel
