I need some lens advice. I've about decided I need a lens with 250mm focal length.

I'm trying to photograph birds through my kitchen window. My guesstimate is the distance from the front element of the lens to where I've set up a tree limb as a perch is 155 inches (12 ft 11 in).

300mm on the K-1 doesn't have enough field of view, and 200mm has too much.

Will the SMC Pentax-DA* 60-250mm F4 ED [IF] SDM vignette on the K-1? How much?

I've used the DA50 f/1.8 on the K-1 and it didn't seem to vignette at all

SDM motor problems?

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Aeternum vive aut conando moriere.

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