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 -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.