Re: Pentax Autofocus Adapter?

[Shaun Canning]

It depends on the lens in use as well. Make sure it is at least an f4.0 or preferably faster (i.e. f2.8 is great). Also make sure the lens is set to infinity, and that the camera AF is set to single rather than servo focus. It will work on servo, but will easily zoom off somewhere else if the point of focus changes by as little as a couple of millimeters.

If the lens is say a 200 f4.0, it will struggle a little in darker conditions because less light is reaching the AF sensors. Also, focusing the lens to infinity first should cover 90% of the lenses range is it is a shorter focal length. Longer lenses (i.e. 200mm +) need a little more hand focusing to be in the ball park when the AF kicks in. It's just practice and fiddling.

Cheers

Shaun

[EMAIL PROTECTED] wrote:

On Tuesday 10 December 2002 12:03 am, Bill Lawlor wrote:

I saw something recently on the Pentax.com site about an autofocus
adapter to get AF with manual lenses. Now I can't find it again. Is
there really such an animal? Anybody used it?

I have one. It works sometimes. I'm not sure if mine is just a defective example, but sometimes it just won't autofocus the lens and I can't get it to behave until after I've turned the camera off and back on. After losing a shot or two to this problem, my enthusiasm for this item has dwindled quite a bit.


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Shaun Canning								
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