Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Great Lens
Review: This lens is sharp. I love this lens! You will see small details on birds with the right light. I want it with me on all my wildlife trips except for some kinds of indoor wildlife. I threw it on my new K-5 and it is even better in low light. The only con is no weather sealing so walk around with a plastic bag in your pocket. I am not concerned about the weight. Some people say it is to heavy. How heavy is it relative to what other lens at the same F stop? Canon had a 500mm F/4.5 that was about a pound heavier. I know because a friend of mine owns a Canon version.
