Pentax HD 1.4x tc and DA 300mm f4 hunting

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Pentax HD 1.4x tc and DA 300mm f4 hunting
1 month ago

Hello,

I just got the new Pentax TC to use on the DA300mm lens and I find that it's hunting a bit more than I would like it to. I tried it with both my K5 and K5IIs with similar results. Both cameras have the latest firmware updates. I cleaned the contacts on the camera and on the lens. I am satisfied with the sharpness but the hunting bugs me. I have tested this under bright sunny days so the light is no issue. Also, I seem to get better results using and older smc 50mm screw lens.

Has anybody else seen this issue?

Thanks!

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