Pentax K1 and FA 80-320 mm F-- error

corvaz · 12-21-2020, 02:29 AM

Hi guys,

I bought that lens from an eBay seller, it looks good but I get "F--" blinching error on viewfinder. I can see and zoom even in live mode, but autofocus does not work and I can't shoot in any mode

Shouldn't it work for K1?

MarkJerling · 12-21-2020, 02:38 AM

Is the aperture ring on the lens set to the 'A' position?

Is the AF-MF camera setting set to AF?

Check and clean the lens contacts, both on the body and the lens, by giving them a rub with a soft cloth.

Bertrand3000 · 12-21-2020, 02:44 AM

The most common reason is an aperture ring not set to A. If it is, then there is good chance the lens is defective. That said there is a setting on your body that will allow to take shots nonetheless (Allow Use of Aperture Ring) but autofocus will be out.

stevebrot · 12-21-2020, 03:49 AM

Originally posted by corvaz

Shouldn't it work for K1?

"F--" in the status display just means that the camera does not detect a lens that supports aperture control from the camera.* It most often occurs with adapted lenses and original K and M series lenses that lack the required mount contacts. Since your FA series lens does have the required contacts, the usual cause is not having the aperture ring locked in the "A" position so that those contacts are enabled.

Steve

* When F-- is displayed, all automated exposure modes default to Av mode with the lens remaining wide open regardless of aperture ring position. Manual modes (M, X, and B) continue to be operational except that metering is limited to stopped down methods using the green button or optical preview lever. P-TTL flash is also not available.

corvaz · 12-21-2020, 03:57 AM - **3 Likes**

Thanks you all... Yes there was a ring not set on A now it's working!

stevebrot · 12-21-2020, 07:46 AM

Originally posted by corvaz

Thanks you all... Yes there was a ring not set on A now it's working!

Good to know! This information is also on page 109 of the camera manual as part of the documentation for the menu setting to enable the aperture ring.

Steve

**UncleVanya** · 12-21-2020, 07:47 AM

Originally posted by corvaz

Thanks you all... Yes there was a ring not set on A now it's working!

I am glad to hear that. My own copy some years ago developed these same symptoms but with the ring in the right place. Those lenses are more fragile than they look. Room what I recall there is a small internal plastic bit that can break that disabled mine.

12-21-2020, 02:29 AM	#1
corvaz Forum Member Join Date: Aug 2017 Posts: 58	Pentax K1 and FA 80-320 mm F-- error Hi guys, I bought that lens from an eBay seller, it looks good but I get "F--" blinching error on viewfinder. I can see and zoom even in live mode, but autofocus does not work and I can't shoot in any mode Shouldn't it work for K1?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Nature Isle aux Coudres @ 28 mm, 45 mm and 63 mm FL with DFA 28-105 mm HD and f/16.	RICHARD L.	Post Your Photos!	6	02-25-2022 05:25 AM
For Sale - Sold: Pentax SMCP-FA 80-320 mm F/4.5.-5.6 with Caps REDUCED	rosettaquarrier	Sold Items	3	08-07-2019 10:54 AM
SMC F 28-80 and FA 80-320?	butangmucat	Pentax SLR Lens Discussion	8	02-24-2019 07:53 AM
For Sale - Sold: Brand New FA 31 mm, FA 77 mm, DA* 60-250 mm, DA* 300 mm	ppkkcao	Sold Items	14	11-02-2014 08:42 PM

12-21-2020, 02:38 AM	#2
MarkJerling Moderator Site Supporter Join Date: May 2012 Location: Wairarapa, New Zealand Photos: Gallery \| Albums Posts: 20,402	Is the aperture ring on the lens set to the 'A' position? Is the AF-MF camera setting set to AF? Check and clean the lens contacts, both on the body and the lens, by giving them a rub with a soft cloth.

12-21-2020, 02:44 AM	#3
Bertrand3000 Veteran Member Join Date: Feb 2019 Posts: 2,009	The most common reason is an aperture ring not set to A. If it is, then there is good chance the lens is defective. That said there is a setting on your body that will allow to take shots nonetheless (Allow Use of Aperture Ring) but autofocus will be out.

12-21-2020, 03:49 AM	#4
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by corvaz Shouldn't it work for K1? "F--" in the status display just means that the camera does not detect a lens that supports aperture control from the camera.* It most often occurs with adapted lenses and original K and M series lenses that lack the required mount contacts. Since your FA series lens does have the required contacts, the usual cause is not having the aperture ring locked in the "A" position so that those contacts are enabled. Steve * When F-- is displayed, all automated exposure modes default to Av mode with the lens remaining wide open regardless of aperture ring position. Manual modes (M, X, and B) continue to be operational except that metering is limited to stopped down methods using the green button or optical preview lever. P-TTL flash is also not available.

12-21-2020, 03:57 AM - 3 Likes	#5
corvaz Forum Member Join Date: Aug 2017 Posts: 58 Original Poster	Thanks you all... Yes there was a ring not set on A now it's working!

12-21-2020, 07:46 AM	#6
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by corvaz Thanks you all... Yes there was a ring not set on A now it's working! Good to know! This information is also on page 109 of the camera manual as part of the documentation for the menu setting to enable the aperture ring. Steve

12-21-2020, 07:47 AM	#7
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,397	Originally posted by corvaz Thanks you all... Yes there was a ring not set on A now it's working! I am glad to hear that. My own copy some years ago developed these same symptoms but with the ring in the right place. Those lenses are more fragile than they look. Room what I recall there is a small internal plastic bit that can break that disabled mine.

Thread Tools	Search this Thread
	Search this Thread: Advanced Search