Pentax K1 and FA 77/1.8 Limited Lens problem

Started Aug 15, 2019 | Discussions
babujr
babujr Forum Member • Posts: 89
Pentax K1 and FA 77/1.8 Limited Lens problem

I can autofocus with all of my Pentax AF lenses on the K1.

But the  77 Limited makes a slight noise when the shutter button is pressed, but does not focus. When I try manual focus, there seems to a three four points of slight resistance to to the focusing ring between, 0.8 ft and 5 ft.

The K1 has nothing to do with this problem, I should think, right?.

Does the lens need some kind of lubrication? Can it be repaired? Any suggestions, please. Could not find any earlier references.

babujr

 babujr's gear list:babujr's gear list
Sony RX100 VII Canon PowerShot Zoom
Pentax K-1
If you believe there are incorrect tags, please send us this post using our feedback form.
PeterPentax
PeterPentax Senior Member • Posts: 1,121
Re: Pentax K1 and FA 77/1.8 Limited Lens problem
1

I suggest you send it in. Something, probably a small screw has worked loose inside the lens.

babujr
OP babujr Forum Member • Posts: 89
Re: Pentax K1 and FA 77/1.8 Limited Lens problem

Sorry, I found a specific thread from 2016, but I don't seem to be able to paste it here. Any other suggestions are welcome.

-- hide signature --

babujr

 babujr's gear list:babujr's gear list
Sony RX100 VII Canon PowerShot Zoom
miles green
miles green Veteran Member • Posts: 7,827
Re: Pentax K1 and FA 77/1.8 Limited Lens problem

yes, that souds right, i think you should send it in.

(PS: I'm assuming at least one of your other Pentax AF lenses is screw-drive AF, depending on the camera's AF motor)

-- hide signature --

Miles Green
Pentaxian since 1997!
Corfu, Greece
N.B. All my images are protected by Copyright

 miles green's gear list:miles green's gear list
Pentax K-1 Pentax K-1 II Pentax smc FA 31mm F1.8 AL Limited Pentax smc FA 43mm F1.9 Limited Pentax smc FA 77mm 1.8 Limited +7 more
babujr
OP babujr Forum Member • Posts: 89
Re: Pentax K1 and FA 77/1.8 Limited Lens problem

Actually ,they are all screw drive.

-- hide signature --

babujr

 babujr's gear list:babujr's gear list
Sony RX100 VII Canon PowerShot Zoom
miles green
miles green Veteran Member • Posts: 7,827
Re: Pentax K1 and FA 77/1.8 Limited Lens problem

So yes, there must be something loose in the 77

Great lens though.

-- hide signature --

Miles Green
Pentaxian since 1997!
Corfu, Greece
N.B. All my images are protected by Copyright

 miles green's gear list:miles green's gear list
Pentax K-1 Pentax K-1 II Pentax smc FA 31mm F1.8 AL Limited Pentax smc FA 43mm F1.9 Limited Pentax smc FA 77mm 1.8 Limited +7 more
Keyboard shortcuts:
FForum MMy threads