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03-28-2012, 09:02 AM   #1
Tonypandy
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K5 + Sigma 600mm Mirror Lens

How do I get this combination to operate either AF or MF?

Ta

03-28-2012, 09:24 AM   #2
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The sigma 600mm is manual focus:

Sigma 600mm F8 Mirror Telephoto Multicoated Lens Reviews - Sigma Lenses - Pentax Lens Review Database

So just set the AF switch on the side of your camera to MF and focus away

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03-28-2012, 09:25 AM   #3
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Might be a good idea to state what it is doing wrong (except for 'it does not work') And if it's an AF or MF lens (from the question it can be both, but I suspect it to be the latter).

A guess might be that you have to allow the use of the aperture ring in one of the K5 menus; do you get F-- in the top display?
Also use M mode and the green button; not that familiar with mirror lenses, but if I'm not mistaken they have a fixed aperture.

More details will help us to help you
03-28-2012, 09:38 AM   #4
Tonypandy
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Idiot

Re my post asking how to use K% with Sigma 600mm mirro lens.

Menu C4
#27 "Using Aperture Ring
Go from 'Prohibited" to "Permitted"
Aperture Ring 2

Voila

Dai Tup

03-28-2012, 09:41 AM   #5
Tonypandy
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Thanks to "STERRETJE" sPOT oN,
03-28-2012, 09:49 AM   #6
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If you're ever in doubt about how to use a manual lens and to avoid metering issues, here's the complete guide:

https://www.pentaxforums.com/forums/pentax-lens-articles/110657-how-use-meter...k-x-k-7-a.html

Adam
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