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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