Getting a flashing F when I try using an SMC Pentax-M 1.7 lens with my K10D

altrace · 12-30-2010, 08:12 PM

I bought a couple of older Pentax lenses today with hopes of using them for video when I buy a KR. When I put the 1.7 50 mm lens on my K10D all I get is a "flashing F ---" (that's not an obscenity either) readout and nothing works. Any suggestions? I mounted a Sigma 28 "mini wide" 2.8 but is has an A function on the lens and it works fine in Manual mode.

borno · 12-30-2010, 08:20 PM

Hi altrace
Be sure to set "use aperture ring" to allow in the custom menu. You still won't see the F stop of course with a "M" lens and need to use M mode.

altrace · 12-30-2010, 08:25 PM

So am I just guessing the exposure and shutter speed? No manual indicator at all?

SpecialK · 12-30-2010, 08:46 PM

Here you go:

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

Nowhere Matt · 12-30-2010, 09:19 PM

So the 50mm f1.7 lens makes your camera blink F--? I think it's defective. I'll give ya five bucks for it.

I'm kidding of course.

JeffJS · 12-30-2010, 10:34 PM

Originally posted by altrace

So am I just guessing the exposure and shutter speed? No manual indicator at all?

https://www.pentaxforums.com/forums/pentax-dslr-discussion/127070-novice-help.html#post1319714

See item #4.

A pencil and paper works quite nicely for recording aperture of individual shots on these types of lenses (seriously).

12-30-2010, 08:12 PM	#1
altrace New Member Join Date: Jun 2009 Location: Chattanooga, TN Photos: Gallery Posts: 7	Getting a flashing F when I try using an SMC Pentax-M 1.7 lens with my K10D I bought a couple of older Pentax lenses today with hopes of using them for video when I buy a KR. When I put the 1.7 50 mm lens on my K10D all I get is a "flashing F ---" (that's not an obscenity either) readout and nothing works. Any suggestions? I mounted a Sigma 28 "mini wide" 2.8 but is has an A function on the lens and it works fine in Manual mode.

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12-30-2010, 08:20 PM	#2
borno Veteran Member Join Date: Nov 2006 Location: md-usa Photos: Gallery \| Albums Posts: 2,580	Hi altrace Be sure to set "use aperture ring" to allow in the custom menu. You still won't see the F stop of course with a "M" lens and need to use M mode.

12-30-2010, 08:25 PM	#3
altrace New Member Join Date: Jun 2009 Location: Chattanooga, TN Photos: Gallery Posts: 7 Original Poster	So am I just guessing the exposure and shutter speed? No manual indicator at all?

12-30-2010, 08:46 PM	#4
SpecialK Pentaxian Join Date: Dec 2006 Location: So California Photos: Gallery Posts: 16,480	Here you go: https://www.pentaxforums.com/forums/pentax-beginners-corner-q/110658-using-ma...x-dslrs-f.html

12-30-2010, 09:19 PM	#5
Nowhere Matt Veteran Member Join Date: Nov 2007 Location: Nowhere Land Photos: Gallery \| Albums Posts: 2,362	So the 50mm f1.7 lens makes your camera blink F--? I think it's defective. I'll give ya five bucks for it. I'm kidding of course.

12-30-2010, 10:34 PM	#6
JeffJS Inactive Account Join Date: Aug 2008 Location: Michigan, USA Photos: Gallery \| Albums Posts: 7,484	Originally posted by altrace So am I just guessing the exposure and shutter speed? No manual indicator at all? https://www.pentaxforums.com/forums/pentax-dslr-discussion/127070-novice-help.html#post1319714 See item #4. A pencil and paper works quite nicely for recording aperture of individual shots on these types of lenses (seriously).

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