The Nikon D90 has an auto image rotation feature, which you may find handy when viewing portrait photographs on your computer.

On your Nikon D90, press the MENU button to bring the MONITOR to life. Make sure that one of the TABS on the left is highlighted, using the MULTI SELECTOR to highlight the SETUP MENU (the spanner). Click right on the M/S to enter the menu proper and scroll down to Auto Image Rotation. Press the OK button and select ON.

Setting to ON ‘adds’ something (invisibly) to the picture to change the orientation of it if you turned the camera 90 degrees when shooting (from Landscape to Portrait). It will not turn the picture on the MONITOR, so you will still have to turn the camera to look at the photo (I believe the manual is a bit misleading here). It just saves time when downloading to a computer as you don’t have to manually rotate each picture. However, this relies on the program you use to view your photos – not all programs recognise this feature – most annoyingly it doesn’t work with Windows Explorer. I’ve never viewed photos from the camera direct to a TV (using the AV cable) but I assume that the correct orientation will be shown here.

Let me know if you have used the Auto Image Rotation and your findings!