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	Introduction
	Why all the excitement
	Not really that heavy
	The true meaning of ergonomics
	The controls
»	The command dials
	The small nuances
	The incredible shutter
	The auto focus and focus tracking
	The exposure metering system
	The power packs
	The lenses
	Why it remains an interesting alternative

So self explanatory and so well placed.
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Nikon F4's DP-20 standard finder. Exposure meter is shown set at "Spot". Bottom right is the exposure compensation indicator for interchangeable screens. .

A blessing, the diopter adjustment knob (left) allows to see through the viewfinder without eyeglasses, by adjusting the eyepiece within a continuous range from -3 to +1.  Just pull it out, rotate until you see clear sharp images, stop and press the knob back in. It won't move. The dial on the right sets the exposure meter to "spot", "matrix" (as shown), or "center weighted".
For precise metering, depending on the viewfinder screen used and since the exposure meter is inside, sometimes it is necessary to compensate.  Adjustments are possible from -2 to +0.5 EV in 0.5 EV steps.
The exposure compensation dial has a range from -2 EV to +2 EV in 1/3 EV increments.  Settings appear on the viewfinder display so there is no need to remove the eye from the subject to set it or change it.
A lever closes a blind to prevent light from entering into the eyepiece and distorting the exposure meter reading. Specially useful when the self timer is applied and light is coming from behind the camera.  Painted red, it prevents easily distracted photographers like me from thinking after use they have suddenly become blind or that the lens iris diaphragm has frozen closed. I miss this color on the F5 and F6.