On 21 Jun 2004 at 14:16, Nenad Djurdjevic wrote: > I have an 1.7AF adaptor and I notice that when fitted to an A lens or later, it > shows a aperture reading in the camera 2 stops slower that that of the lens. > For example on an A50/1.4 it gives a maximum aperture of f2.8. Why doesn't it > show the aperture as f2.5, ie reduced by 1.5 stops? (my camera does show half > stops normally btw).
The aperture compensation is a bit of a pain, it's misleading and I don't know how accurate it is as the loss isn't absolutely linear between different lenses. I'd rather the real lens f-stop was reported as it's a pain when swapping between the 1.7AF and other TC. Learn to live with it I guess. :-( Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
