In a message dated 5/29/2002 6:55:57 PM Central Daylight Time, [EMAIL PROTECTED] writes:
> Re the 1.7AF adapter: > > Do you roughly focus the lens before using the AF? > It can not do it by itself in all situations. > You have to give it a starting point. > Get it into the right range. > It will finish the job. > and [EMAIL PROTECTED] writes: > It sounds to me like Bob's reply is on the right track. There are > definitely circumstances where the T/C can't cover the whole range from > infinity in. You might need to shift the focus point on the "host" > lens closer to the object you're trying to AF. > This sounds kind of reasonable; it does behave as if it can't do the whole job by itself. Also, I examined the contacts very carefully this evening; they looked pristine but I cleaned them anyway ... However. Just trying the combination out, first it would focus on the semi-far subject and a much closer one, and it would shift between the two nicely; then it stopped being able to get to the further one without help, so I helped it; then it was once again shifting happily between the two. Is it actually supposed to require partial focusing by me, or is this just a workaround? If it's working the way it should, then I wonder why it's not consistent. ERNR My photographs hang on the virtual walls at http://members.aol.com/ernreed - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
