I've had this lens for less than a month so it's hard to identify the pros and cons especially since it's winter here and we haven't had very good light. However, I've used it a few times and am happy with the results.

I bought this product as I couldn't afford the f2.8 version and wanted something that would give me an extended range for photographing wildlife with crisp optics and very sharp focusing. I had read reviews of this lens online and it had been described very favourably.

I've taken some stunning photos of birds with this lens. It would be great if the lens had a larger aperture, but then the price would shoot up. Make sure you have a good, solid tripod.

Easily Interchangeable; Rugged; Sharp Focus; Strong Construction

I've read many reviews about this lens, and now that I've used it I believe that if your expectations are realistic you can truly love it and what it can do. This is a Prime lens, very sharp, with decent focusing speed in good light, and light enough to hand-hold!

Relatively light weight for a Prime Telephoto lens; takes teleconverters; great sharpness and clarity

Rear of lens is "open" so be careful of dust/dirt when changing lenses

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The Nikon 300mm f4 is a fantastic lens, very sharp wide open, even with the 1.4x converter, for wildlife mostly useful with the converter. It has a solid build quality, fast autofocus which is not as fast as the best Canons, but still fast enough to track flying birds for example.

Excellent colors; sharpness and contrast; fast autofocus; solid build; built-in-hood; tripod collar

high price; no back lens element; dust can enter