Dave,
What mode of metering were you using?
(center) spot? matrix? center-weighted?
You probably know this, but just in case:
If you are using a matrix or even center-weighted, and you have lots of
bright sky in the frame, that can lead to underexposure.
From your description of the scene, it sounds that there could be plenty
of bright sky (or, perhaps, something else very bright, say, bright-yellow
field of ripe grains [wheat, rye]).
And, of course, having the sun in the frame produces the same effect, but
even worse.
The same can happen if you are using spot metering, and the spot (the
center by default, unless you configured it to match the focus point, and
that one is to a side) is not on the subject, - you can get the same
effect.
HTH,
Igor
On Jul 22, 2016, at 3:58 AM, David J Brooks wrote:
So i used the 55-300 at the plowing demo yesterday. Hot humid and
dusty day. The unit itself focused quite nicely, it fits well on the
K-5 and my hand zoom barrel stiff but thats fine. Barrel fully
extended makes for a bit of a shaky hand held. IQ and sharpness seem
decent enough. Only thing and i'm not sure its due to the lens or the
camera metering but when using the 17-70 or the 50-200 a +.3 EV
correction is needed. I used +0.7 and all of the DNG's are still way
under exposed. I would normally get a small amount of under exposure
shooting into the sun with my other lenses but every shot, into the
sun or with the sun, is quite a bit under exposed. I'll need to adjust
every one in LR.
Any thoughts on this.
Dave
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