At just a little over a pound, this should appeal to nature shooters looking to travel light. Sharp at the important apertures, with slight softening at the smallest ones and at longer focal lengths.
Standout Spec: The price is astoundingly little for such a long zoom lens.
Pentax 17–70mm f/4 DA AL SDM
Pentax 70mm f/2.4 DA Limited
Sigma 70–300mm f/4–5.6 DG OS
Sony 70-400mm f/4-5.6G SSM
Tamron 70-300mm f/4-5.6 LD Macro