Thanks Paul -
I don't think I've shot at an ap smaller than f8

I assume that is f8 as set/indicated on the lens and not the effective aperature as a result of the convertor.

I'm interested, as you can see, as I'd like to be able couple the convertor to my 600 and don't want to spend the money if AF won't work with the smaller aperatures of that lens - I already have both the A 1.4XL & 2.0XL convertors and that lens becomes handicapped with those convertors on action shots with that lens.


Kenneth Waller
http://www.pentaxphotogallery.com/kennethwaller

----- Original Message ----- From: "Paul Stenquist" <[email protected]>
Subject: Re: PESO - A Kiss for Mom


Hi Ken,
The only autofocus problems I've seen have been due to electronic contact glitches -- everything has to be spotless. However, I don't think I've shot at an ap smaller than f8. Will give it a try next time.

Paul via phone

On Nov 9, 2014, at 7:22 PM, Ken Waller <[email protected]> wrote:

Cute capture Paul.

Have you run into an aperature that causes the AF to not focus with the DA convertor?
I believe that the old 1.7 AF convertor had a limit for AF to operate.

Kenneth Waller
http://www.pentaxphotogallery.com/kennethwaller

----- Original Message ----- From: "Paul Stenquist" <[email protected]>
Subject: PESO - A Kiss for Mom


K-3, DA* 60-250/4, DA1.4X Converter, 350mm, f5.6, 1/800th, +0.3 exposure comp, ISO 1600

http://photo.net/photodb/photo?photo_id=17900593&size=lg


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