My F4s has always made this noise.
Prior to buying it I had The Melbourne Nikon repair agent go
over the camera and it came back ALL OK.
Tony Balm
> # 7: F4 aperture noise
>
> Date: Mon, 15 Mar 1999 14:23:25 -0600
> From: Anderson Neal F DLPC <[EMAIL PROTECTED]>
> Subject: F4 aperture noise [v04.n305/7]
> Message: 7
>
> The F4S I recently bought makes a high-pitched noise when I press the DOF
> preview button and when it stops down the aperture prior to an exposure,
> even without a lens mounted. It sounds like something is rubbing against a
> tightly wound coil spring or fine pitch threads on a screw. It works fine,
> but I'm concerned that the noise is not normal; I don't have another F4 to
> compare it to. I don't recall ever hearing an F, F2, or F3 make this sound.
> Is it normal for an F4? Advice is appreciated.
>
> Neal [EMAIL PROTECTED] Florida, USA
>
