Olympus OM Zuiko Auto-T 350 mm f/ 2.8 Lens

• Extremely sharp, at any aperture (limited by diffraction), corner-to-corner!
• Close focusing (3 metres) for a reproduction ratio of 1:7.
• Internal focusing via a smooth rotating cam.
• Nine diaphragm blades result in smooth bokeh and 18-point sun stars.
• Outstanding build quality and precision, and resulting fit-and-finish.
• Integrated lens hood.
• The matched Olympus 1.4X-A tele-extender affects the image quality minimally, resulting in a super-sharp 500mm ƒ/4 lens!

Weaknesses:

• Big and heavy, but any lens of this reach and aperture will be big and heavy.
• Flourite coating on front element is soft and scratches easily.
• No way to put a protection filter on the front.
• Somewhat rare and expensive, although not as much as the 250mm ƒ/2 little-sister lens.
• As a classic legacy film lens, it is manual focus only.

Comments:

This is simply an awesome, classic lens!

It is especially useful for wildlife, motor sports, even macro. But with moving subjects, you have to use old-school manual focus techniques, such as pre-focus on a spot that the subject moves into.

It is still useful on modern mirrorless cameras via a simple adapter, but becomes even more awesome with the Metabones Speedbooster Ultra, which gives you a 250mm ƒ/2 lens for a fraction of the cost of the ultra-rare OM Zuiko 250mm ƒ/2.