What are your favorite Third Party zooms ever made for Olympus OM and why? Hey folks, just for fun, list your top favorite 3rd party zoom lenses in Olympus OM mount only list! This list can be as long or as short as you want, is purely subjective and there is no wrong or right answer…although if you choose a JCPenny zoom lens as your #1 zoom lens of all time I may question your photography experience ! Most people would agree that Olympus OM Zuiko primes are superb, however when it came to zoom lenses most Olympus OM Zuiko zooms were just really "average" - the exception of course was the state of the art Olympus OM 35-80mm f2.8 ED zoom lens. Many hi end 3rd party zooms actually surpassed the OM Zuiko zooms in quality and lens performance (see my list below) which is why many photographers went with hi end 3rd party zooms. The zooms can be ANY third party brand zooms with a original Olympus OM mount such as Sigma, Tamron, Tokina, Vivitar...ect. They can be cult lenses. They can be lenses you own or want to own or a mix. You may post a photo if you like of your favorite 3rd party zoom. No modified lenses or custom made adapters with a modified Olympus OM mount. Tamron interchangeable mounts OK! No prototypes. Again ZOOMS only NO PRIMES! Open to both Olympus OM and Olympus 4/3rds both film and/or digital photographers. Here is my list: Angenieux 70-210mm f3.5 Macro 1:2.5 zoom in Olympus OM mount Angenieux 35-70mm f2.5-3.3 zoom in Olympus OM mount (this lens later based for Tokina ATX zooms) Carl Zeiss Jenazoom 75-300mm f4.5/5.6 MC Series I or II Macro 1:3 zoom lens Olympus OM mount* Tokina 80-200mm f2.8 AT-X zoom lens Olympus OM mount Vivitar Series 1 70-210mm f3.5 zoom Olympus OM mount *My favorite 3rd party zoom and why? Out of the list above I have owned the above Carl Zeiss Jenazoom 75-300mm and shot with the Olympus OM-3 camera. These are high quality 3rd party zoom lenses made by Sigma of Japan designed and licensed by Carl Zeiss in 1980's to 1990's. These were underrated zoom lenses as these hi end zooms were all MC (multi-coated) and some even had APO/ED glass! In fact many of the CZJ Jenazoom lenses were identical to Sigma APO zooms often renamed ED (Extra Dispersion glass) for CZJ Jenazoom lenses.