Summary: I bought this lens used. It was described as a used lens but in very good working order. The seller described it correctly and I have used it quite a lot since I bought it. It is a very good lens. I would buy from this seller again.
Summary: Before I bought this lens I knew nothing other than the reviews at Fred Miranda's very useful site. The reviews were good so I bought it. That was over 5 years ago and boy, this lens has delivered. Fast focus and amzing detail, contrast and color. I am a pro and I challenge myself with prime (fixed focal) lenses only. This is the only zoom that I have owned since moving to digital in 2005.
Summary: Bought one of these great, sharp lenses new in about 2000 and used it extensively. Two years ago the autofocus mechanism got sticky. Canon advised that it had stopped servicing the lens in 2009. They suggested trying KEH in Atlanta, but they no longer have parts, either. Strauss Photo Tech in Washington DC might have (I didn't call) but they have absolutely terrible reviews.
Summary: This is a multi-purpose lens, perfect for general shooting, weddings, vacations, etc. I've enjoyed the quality and ease of use. You cannot go wrong with this lens, so long as you don't mind a bit of weight. Women may not be crazy about it because of that. Otherwise, no issues.
Summary: I purchased this rig with Follow Focus to do some small films , The rig feels nice enough , Although on the very first shoot I did with this product the Follow Focus main gear fell off..I could push it back in place , it just kept falling out during the shoot...that I am not happy about....I needed the rig and could not afford the down time.
Excerpt: профессионально снимал им детей, и самое главное - архитектуру, экстерьеры и интерьеры. Правда приходилось панорамить, не всегда складывалось, помню бассейновый зал с округлым периметром никак не складывался. Отсутствие стаба бесит, когда при недостатке света репортаж без пыхи мажется. Но всё равно результат лучше чем на каком-либо другом.
Pros: микроконтраст (резкость), зайцестойкость неплохая, глупо перечислять сильные стороны у топового зума.
Cons: Отсутствие стаба конечно, это главный минус., мне показалось, что сначала излишне высококонтрастный, третий пятак со своим ДД конечно вытягивает, а вот как у младших - не могу сказать., Но с этим никаких проблем. Самый смак на 35-50мм