645Z & SMC PENTAX - FA 645 ZOOM 1:4.5 80 - 160 mm

Janko · 02-24-2017, 07:03 AM

Hi all,

I have just bought the lens mentioned in the title as it was posted as auto & manual focus lens. I can see the focusing screw inside the lens mount and also I can see the screw on the body inside the mount. However, the lens does not focus automatically and on the display is shown MF for manual focus. There is no AF/MF switch on the lens and I cannot find any option to enable such focusing in the camera menu.

Does the lens do autofocus with the 645Z body and the lens is broken, or this combination just don't have autofocus option?

Thank you for your help

Janko

Franc · 02-24-2017, 07:07 AM - **1 Like**

its a push-pull AF/MF Focusing Ring, no switch

Janko · 02-24-2017, 07:12 AM

Originally posted by Franc

its a push-pull AF/MF Focusing Ring, no switch

Thank you Franc, I hoped the solution will be such simple !!!

**leekil** · 02-24-2017, 05:15 PM

Once I bought a lens advertised as "the autofocus doesn't work" and it turned out to be the confusion of the push-pull AF engagement.

Janko · 02-26-2017, 01:34 PM

Originally posted by leekil

Once I bought a lens advertised as "the autofocus doesn't work" and it turned out to be the confusion of the push-pull AF engagement.

Lucky you, must have been quite cheap

02-24-2017, 07:03 AM	#1
Janko New Member Join Date: Feb 2017 Posts: 3	645Z & SMC PENTAX - FA 645 ZOOM 1:4.5 80 - 160 mm Hi all, I have just bought the lens mentioned in the title as it was posted as auto & manual focus lens. I can see the focusing screw inside the lens mount and also I can see the screw on the body inside the mount. However, the lens does not focus automatically and on the display is shown MF for manual focus. There is no AF/MF switch on the lens and I cannot find any option to enable such focusing in the camera menu. Does the lens do autofocus with the 645Z body and the lens is broken, or this combination just don't have autofocus option? Thank you for your help Janko

02-24-2017, 07:07 AM - 1 Like	#2
Franc Pentaxian Join Date: Jan 2010 Location: Hoevelaken Posts: 1,048	its a push-pull AF/MF Focusing Ring, no switch

02-24-2017, 07:12 AM	#3
Janko New Member Join Date: Feb 2017 Posts: 3 Original Poster	Originally posted by Franc its a push-pull AF/MF Focusing Ring, no switch Thank you Franc, I hoped the solution will be such simple !!!

02-24-2017, 05:15 PM	#4
leekil Site Supporter Join Date: May 2016 Photos: Albums Posts: 1,379	Once I bought a lens advertised as "the autofocus doesn't work" and it turned out to be the confusion of the push-pull AF engagement.

02-26-2017, 01:34 PM	#5
Janko New Member Join Date: Feb 2017 Posts: 3 Original Poster	Originally posted by leekil Once I bought a lens advertised as "the autofocus doesn't work" and it turned out to be the confusion of the push-pull AF engagement. Lucky you, must have been quite cheap

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