I dunno...I think it's pretty clear that your lens is "F--"'d.
;>)
-p
On 7/15/2013 7:25 PM, John wrote:
Yeah. VERY VERY carefully, holding it over my head with the lens bayonet
facing down so nothing could fall inside.
I'm getting some kind of intermittent failure mode. I turn it on & it
prompts for a focal length. I select a focal length & press Ok and I get
the "F--" on the display.
I turn it off & wiggle the lens in the mount; turn it off & dismount &
remount the lens; turn it off & dismount the lens, clean the contacts on
the lens & body and remount the lens ...
When I turn it back on, maybe I'll get the focal length prompt again or
maybe I'll get the last aperture I selected.
If I *DO* get the aperture, it appears I'm going to get the "F--" again
after a few shots. It's definitely something going on with the lens.
I've tried it with a bunch of other lenses that have the aperture ring &
an 'A' detent. They all work just fine.
I've seen that "F--" before with several different lenses and it's
always been when I somehow got the lens unlocked from the 'A' detent. As
soon as I get the lens back in the 'A' position the problem goes away.
I think something inside this lens that has to do with whatever circuit
detects whether the lens is mechanically locked into the 'A' position or
not is wearing out.
On Mon, Jul 15, 2013 at 12:59 PM, John <[email protected]> wrote:
I finally dredge up enough motivation to actually go out and do some
photography. Got on site & my favorite lens takes a crap on me.
My workhorse has been a Tokina ATX-Pro 287 28-70mmf/2.8. I got two
frames
&
camera won't fire the shutter. Aperture shows "F--". I do everything I
can
to make sure the lens is properly seated & that the aperture ring is
latched
into the 'A' position ... NO JOY! Nothing I can do will make it
show the
aperture.
I have one other 'A' lens (SMC Pentax-A Macro 1:2.8 100mm) in my
bag on
site, & when I switch to it the aperture works fine. I also try both
lenses
on my K10D (backup) and get the same results; Tokina "F--" & Pentax
shows
the aperture selected with the thumb-wheel.
I'm back home & I've got a couple of other Pentax auto-focus 'A'
lenses
to
test with. They all show the aperture & change with the
thumb-wheel. And
just to add insult to injury, I give the Tokina one last try & now
it's
showing the aperture again.
Meanwhile, every bit of motivation has drained away!
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