Black and White conversion methods
I've seen a couple of methods psted about converting colour to black and white, but here is an overview of 4 methods for turning colour images into monochrome goodness.
This brief tutorial list a few methods for creating black and white images in photoshop 7.
1. Quick and easy convertion is Desturation from the drop down menu choose Image>Adjust>Desaturate
2 Channels. This was the first method i moved onto and had great success with.
In the channels palette (next to the layers palete) you will see the channels for your image, most likely RGB, Red, Green and Blue (plus any other channels that you have set up). Select one of the individual channels, for example red. To do this just click on the channel as you would a layer to select it. Then select all and copy it to the clipboard. Once you have done this select the RGB channel again.
Click on the layers palette and then paste your B&W image into your image ( you must select the RGB channel before pasting, otherwise you will only be pasting into the single coloured channel and not your image)
I found that the best results for this method involved using two or three channels to get the best tones for different elements of an image. Of course you can then use levels or curves to adjust your image once you pasted it in.
3.LAB, the same method as above but convert you image to LAB colour before selecting the "Lightness" channel
In your layers pallette add a "fill or adjustment layer" click on the button that is a circle half black half white and choose Channel Mixer from the list.. Alternatively you can add one through the drop down menu by going: Layer>New Adjustment layer>Channel Mixer.
In the channel mixer select the "monochrome" option and use the RGB and "Constant" sliders to adjust the monochrome effect of your image
And there you have it. Once you have done this you can play around with the images using brightness, contrast levels curves etc... I often use two B&W images and use layer masks and normal masks, as i find it preferable to dodging or burning because it gives you a finer control.
Any questions, just pm me. or drop em in here.