The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Nikon 300mm f4D ED-IF and the Nikon 85mm f1.4D for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Nikon 300mm f4D ED-IF is the longer of the two lenses at 223mm. The Nikon 85mm f1.4D with a length of 73mm, is 150mm shorter. Besides being longer, the Nikon 300mm f4D ED-IF also has a larger diameter of 90mm compared to the Nikon 85mm f1.4D's 80mm diameter.
The weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Nikon 85mm f1.4D weighs 550g, 61% (890g) lighter than the Nikon 300mm f4D ED-IF's weight of 1440g.
Below you can find the dimension and weight table of the Telephoto Prime Lenses in Nikon F (FX) Mount for size comparison purposes.
Telephoto Prime Lenses in Nikon F (FX) Mount for Size Comparison
Lens Mounts
Both the Nikon 300mm f4D ED-IF and the Nikon 85mm f1.4D has the same Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with the Nikon F (FX) lenses are Nikon D6, Nikon D780 and Nikon D3500.
Focal Range
Nikon 300mm f4D ED-IF is a prime lens with fixed focal lenght of 300mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 450mm.
Nikon 85mm f1.4D is a prime lens with fixed focal lenght of 85mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 127.5mm.