Pentax K lenses - Camera displaying F

redimp · 06-30-2013, 08:27 AM

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Just picked up a Chinon 200mm f2.2 and a Tamron 2x converter for next to nothing (I also got a SMC Pentax F 50mm f1.7) but when I put them on the camera I get no response and the camera just displays F - -. How do I get the camera to take pictures with them on please? The Pentax lens works billiantly btw - a bargain for ten quid I reckon.

Anvh · 06-30-2013, 08:30 AM

You need to enable the use of aperture ring in the custom menu of the camera.

**boriscleto** · 06-30-2013, 08:37 AM

https://www.pentaxforums.com/forums/pentax-beginners-corner-q/110658-using-ma...x-dslrs-f.html

redimp · 06-30-2013, 08:37 AM

Simples. Thank you very much :-)

**boriscleto** · 06-30-2013, 08:39 AM

Originally posted by redimp

Simples. Thank you very much :-)

That will get the lens working. But to meter you will have to use M mode and the Green button.

lytrytyr · 06-30-2013, 08:56 AM

Originally posted by boriscleto

But to meter you will have to use M mode and the Green button.

Depending on the camera model
(and the TC behaviour if that's what you're using),
pressing the Av button in M mode
should automatically set the correct shutter speed
for the aperture you have selected with the aperture ring.

redimp · 06-30-2013, 09:01 AM

Done it, selected aperture, pressed green button to select shutter speed and then pressed the shutter (first thing I did was focus confirm). Dead pleased because I got all three bits of glass plus a small tripod for £30. I now have the equivalent of a 600mm lens on a 35mm camera and because the 200 is quite fast, it all works ok.

**boriscleto** · 06-30-2013, 10:03 AM

Originally posted by redimp

Done it, selected aperture, pressed green button to select shutter speed and then pressed the shutter (first thing I did was focus confirm). Dead pleased because I got all three bits of glass plus a small tripod for £30. I now have the equivalent of a 600mm lens on a 35mm camera and because the 200 is quite fast, it all works ok.

One question though. Are you sure it's a 2.2? I've seen Chinon F/3.3s but never a 2.2.

redimp · 06-30-2013, 11:29 AM

It's a 3.3. Squinted at it while hurrying a post.

redimp · 06-30-2013, 03:24 PM

Now I know this: SMC PENTAX-F 50MM F1.7 AUTOFOCUS LENS FOR PENTAX FILM/DIGITAL SLR'S | eBay is probably a ridiculous amount for this lens but it is sure as hell making me feel good about the tenner I paid

06-30-2013, 08:27 AM	#1
redimp Senior Member Join Date: Jan 2013 Location: Lincoln Photos: Albums Posts: 106	Pentax K lenses - Camera displaying F Staff note: This post may contain affiliate links, which means Pentax Forums may earn a small commission if a visitor clicks through and makes a purchase. If you would like to support the forum directly, you may also make a donation here. Just picked up a Chinon 200mm f2.2 and a Tamron 2x converter for next to nothing (I also got a SMC Pentax F 50mm f1.7) but when I put them on the camera I get no response and the camera just displays F - -. How do I get the camera to take pictures with them on please? The Pentax lens works billiantly btw - a bargain for ten quid I reckon.

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06-30-2013, 08:30 AM	#2
Anvh Veteran Member Join Date: Sep 2011 Posts: 4,616	You need to enable the use of aperture ring in the custom menu of the camera.

06-30-2013, 08:37 AM	#3
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,475	https://www.pentaxforums.com/forums/pentax-beginners-corner-q/110658-using-ma...x-dslrs-f.html

06-30-2013, 08:39 AM	#5
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,475	Originally posted by redimp Simples. Thank you very much :-) That will get the lens working. But to meter you will have to use M mode and the Green button.

06-30-2013, 08:56 AM	#6
lytrytyr Pentaxian Join Date: Nov 2011 Photos: Gallery \| Albums Posts: 4,310	Originally posted by boriscleto But to meter you will have to use M mode and the Green button. Depending on the camera model (and the TC behaviour if that's what you're using), pressing the Av button in M mode should automatically set the correct shutter speed for the aperture you have selected with the aperture ring.

06-30-2013, 09:01 AM	#7
redimp Senior Member Join Date: Jan 2013 Location: Lincoln Photos: Albums Posts: 106 Original Poster	Done it, selected aperture, pressed green button to select shutter speed and then pressed the shutter (first thing I did was focus confirm). Dead pleased because I got all three bits of glass plus a small tripod for £30. I now have the equivalent of a 600mm lens on a 35mm camera and because the 200 is quite fast, it all works ok.

06-30-2013, 10:03 AM	#8
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,475	Originally posted by redimp Done it, selected aperture, pressed green button to select shutter speed and then pressed the shutter (first thing I did was focus confirm). Dead pleased because I got all three bits of glass plus a small tripod for £30. I now have the equivalent of a 600mm lens on a 35mm camera and because the 200 is quite fast, it all works ok. One question though. Are you sure it's a 2.2? I've seen Chinon F/3.3s but never a 2.2.

06-30-2013, 11:29 AM	#9
redimp Senior Member Join Date: Jan 2013 Location: Lincoln Photos: Albums Posts: 106 Original Poster	It's a 3.3. Squinted at it while hurrying a post.

06-30-2013, 03:24 PM	#10
redimp Senior Member Join Date: Jan 2013 Location: Lincoln Photos: Albums Posts: 106 Original Poster	Now I know this: SMC PENTAX-F 50MM F1.7 AUTOFOCUS LENS FOR PENTAX FILM/DIGITAL SLR'S \| eBay is probably a ridiculous amount for this lens but it is sure as hell making me feel good about the tenner I paid