Originally posted by kpevav We are considering an Alaska tour next summer (mostly land-based) and I am also considering a Black Friday weekend lens purchase for the K-5ii/K-5iis. The two contenders are the Pentax 60-250 and the Pentax 300, both expensive but both reduced by a few hundred for another day. Obviously, the 60-250 would be more flexible, but how much would I miss on the long end? Or, in pretty good light conditions, would the 55-300 suffice?
My other camera is a current m4/3 camera that could come along with the Panasonic 100-300 lens (600mm equivalent in 35mm), which is pretty good, but I would think either of the Pentax lenses would be noticeably better. Is that so?
It probably depends on what you're going to do with the long lens. Alaska means landscapes to some photographers (even those using long lenses), birds to some, large non-airborne wildlife to others. Probably the K5 wouldn't the first choice for fast autofocus, if that's a consideration.
I don't know anything about the Panasonic but you do have to consider how much you want to carry and how much equipment you'll practically be able to access quickly on a tour. If it's the kind of tour I'm familiar with it's not like you're driving around in your own car with all your equipment spread out ready for quick access. Sometimes you barely have time to change lenses or position, so a fixed lens like the 300 might be less useful than if you were just out photographing on your own.