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Forum: Troubleshooting and Beginner Help
02-04-2016, 02:33 PM
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Sounds like 2 diffent problems, since one camera works in single and 9 point, the other not at all. Biz-engineer sounds like a hair or something on one AF sensor that is making the camera try to latch onto it
The other is either a general failure or maybe for both cameras just a lot of dust dirt, or fogging in the prism housing. Maybe look at the focusing screen, also, I forget on Pentax, are the AF sensors off a different mirror.
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Forum: Troubleshooting and Beginner Help
02-04-2016, 11:16 AM
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What I do not understand is when shooting birds is why on earth do your leave the AF on its own to pick what to focus on. Normally birds are far enough away that they are in the middle of your viewfinder, and the remaining focus points are beyond the bird in the image. To me the camera simply sees a featureless background and just will give up because there is absolutely nothing to focus on.
Why the cams gives up, I don't know, but I suspect somehow it decides it wants an off centre focus spot. After all you asked to look at all of the sensors, so I think it assumes to ignore the centre one. It is trying to interpret focus of a composition that contains, well, nothing at all off centre
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