Thanks - sounds like what is happen with my K10d, though it does work OK
with non-A lenses or lenses where the aperture ring is not on the A
setting.
Mark
On 5/2/2015 10:29 AM, P.J. Alling wrote:
My old *ist-D has a similar problem, mounted lenses simply won't stop
down using either DOF preview or the green button, in any mode. I
believe there's a broken lead either on a flex connector or the
circuit board, or something is interfering with one of the micro
switches resetting.
On 5/2/2015 8:56 AM, Mark C wrote:
Thanks, Darren - the eraser did not help. I also tried tightening the
lens mount screws, but they were plenty tight so I didn't accomplish
anything. I was hoping it might be a simple matter of one contact on
the mount not working, but if so it is more than just being dirty.
I pulled the battery out and will leave the camera without a battery
for a day or so - sometimes that can reset things but I'm not holding
out much hope.
Mark
On 5/1/2015 7:10 PM, Darren Addy wrote:
First thing to try with anything resembling contacts problem is to
take a clean pencil eraser and rub the contacts on the body and lens
(to clean them). You shouldn't need to make any eraser shavings, but
if there are blow them off in such a way that you don't get them
inside the camera body. That is enough to fix most contact related
issues.
Hope it works!
On Fri, May 1, 2015 at 4:46 PM, Mark C <pdml-m...@charter.net> wrote:
My IR converted K10d has started acting strange - basically it
pretty much
ignores any A, F, FA or DFA lens that is attached to it and treats
them like
a K or M mount. The camera will do nothing unless "using aperture
ring" is
enabled in the custom options. Even then, if the apeture ring (if
present)
is set to the "A" setting, the camera will not stop down the
aperture while
making an exposure or when the DOF preview is invoked. The camera
does show
the aperture and shutter speed setting on the LCD and allows them
to be
changed, and shows them changing in program modes, but it never
actually
stops down the lens to the shown aperture. The exif data in images
shows the
lens wide open in all shots, even when the LCD shows it stopping
down. The
camera correctly detects the maximum aperture of different lenses
attached
to it.
At first I thought it was a mechanical problem with stopping down
the lens -
but if the apeture ring is moved off the A setting, or if a pre-A K
mount
lens is attached, then the camera works as it should. In manual
mode it does
stop down metering and (in manual mode only) it stops down the lens
and DOF
preview works. So the mechanical couplings work, it seems like the
camera is
unable to detect a lens in A mode in order to stop it down, though
it does
detect the lens's maximum aperture and shows that the aperture
should be set
to on the LCD screen
Has anyone experienced something like this? Could this be something
simple,
like an issue with contacts in the mount? I like the camera and
have gotten
some nice images with it, but have actually taken only about 5000
exposures
with it in the 5 years I've owned it, so the utility of repairing
it is
questionable.
Any thoughts about what might be going on would be appreciated.
Mark
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