I will note that cropping 200 down to 250 AoV doesn't lose a lot of
resolution, and does reduce the chance of losing a photo because that
pesky bird was in just the wrong place. It is also much less expensive
than buying a new lens if you already have a 200.
Also the final result of a great 200 that has been cropped is likely
better than an OK 250 that hasn't. Not that I've heard any complaints
about the 60-250 in that regard. John might even have one to sell.
Depending on the speed you need, I'd also be inclined to look at the DA
55-300, which actually works pretty well at that length on the K-1 as
well as being pretty inexpensive.
On 2026-07-30 15:47, John Sessoms wrote:
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?
--
Aeternum vive aut conando moriere.
--
Larry Colen [email protected] http://red4est.com/lrc
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