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12-30-2010, 08:12 PM   #1
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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.

12-30-2010, 08:20 PM   #2
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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
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So am I just guessing the exposure and shutter speed? No manual indicator at all?
12-30-2010, 08:46 PM   #4
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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
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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
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QuoteOriginally posted by altrace Quote
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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