How do you tint an image?

[ingyaningya]

I have an app on my iPod called "Photoshop Express", and it has the simple option of 'Tint', which will tint the image the color you want (red, green, etc.). How do you do this on normal, desktop Photoshop? No fancy "how I like it", I want just the image to be tinted red, or green, or blue, and the image have the color info, meaning if I convert it to Black and White, you could tell a difference in lightness and darkness from the original picure (you can tell it was tinted).

Can someone please explain how to tint an image?
Thank you.

 

[Hoogle]

open up your image goto Image > adjustment > photo filter
or add a solid colour adjustment layer and lower the opacity if you want a stronger tint than what a photo filter uses
or the basic way is to create a new layer grab the paintbucket tool and select a colour fill the layer with that colour and lower the opacity of the layer
or for some funkier tints
go to image > adjustment > hue/saturation check the colourize box and adjust the sliders