Monitor calibration

Could someone give me some advice on monitors please. All my pictures on my monitor show up as what i can only say are good. Having seen those pictures on two other monitors i'm shell shocked. I never knew how uncalibrated my monitor was, most look heavily under exposed or have contrast that is way out.

http://www.picturesofengland.com/England/East_Sussex/Robertsbridge/Bodiam_Castle/pictures/1125077

My monitor was given the thumbs up by just about every reviewer i could find, so i know it can do the job. How do i set my monitor up to show what you see. As i said, on my monitor my pictures do me proud, but it seems i'm not getting the same effect on every other monitor on the planet. Any help would surely be appreciated.

I think before messing about with monitor settings, you should have a look at the Levels ( Histogram) of some of your photos here and there.  The photo of Bodiam Castle has had the whites held back a shade and the ones of Arundel Castle and of Beachy Head from the promenade, there's nothing in the photos beyond mid tones.  The clouds at Arundel Castle which should be white have been set as a mid-range o its made white grey more or less. The contrast has gone out the window too as a result, as it's only going from black to mid-range tones as your white point.  Correct the Levels and the clouds become white; the picture brightens up, and the contrast improves.

On your D300, it could be under-exposing via the menu and won't show up on the camera display that it is----you can find this setting at  Custom Setting Menu > b Metering/Exposure> b3 Exp Comp/Fine Tune and check it's not set  to under expose.  Or do a factory reset to clear any settings you have and start from scratch as when new. Correcting the Levels on the pic below works wonders to it.

Picture by Dennis Bailey

I can't seem to paste a revised version of your Arundel Castle so I've temporarily put in on my Flickr page so you can now check your monitor again Dennis.  Levels altered, slight tweak of Contrast, and shadow from wall light removed.

Link now removed

Thank you for your help, i wouln't have got there without it. Seems i have still a lot to learn.

I owe you one

You're welcome Dennis and was just going to add-----on your D300 you have 2 metering buttons;  on the one next to the eye piece, put it in the middle/ Matrix position, and the 2nd one above the CF door lock catch, put that one in the middle option too. On the large multi-selector button above this one, just check it hasn't been put to L and the white mark on it is set against the dot.  Hope this helps, for its only in some scenes, it's metering the sky too much.

I assume the White Balance you have set on Auto; but I did have the impression a UV/ Daylight filter was on the lens which seems to be ever so slightly warming up the photos, though scarcely noticeable.

Thanks for the lesson, it produced results that can only be called outstanding.

Picture by Dennis Bailey