Converting color to black and white

[Beagle]

In photoshop I convert color images to b&w by discarding the color info in the original image.

How do I do this in Affinity ?

[firstdefence]

Just use the Adjustment filter Black and White from the Layers Panel

or

Go to the Channel panel and click on any of the background channels and select Create Greyscale Layer.

[Beagle]

Thank you. I just tried but it doesn’t reduce the file size.

actually, my display isn’t as yours-I  had to get New Adjustment Layer from drop down.

Also, I cant find the Channels panel. The Help tells me about the panel but where it’s found.

I cannot seem to get a layer that just says Black and White. The one I used is Black and White Adjustment. 

Edited November 17, 2018 by Beagle
Additional

[toltec]

40 minutes ago, Beagle said:

Thank you. I just tried but it doesn’t reduce the file size.

actually, my display isn’t as yours-I  had to get New Adjustment Layer from drop down.

Also, I cant find the Channels panel. The Help tells me about the panel but where it’s found.

I cannot seem to get a layer that just says Black and White. The one I used is Black and White Adjustment. 

In Affinity Photo, you can go Document > Colour Format > Greyscale. Then it will be a greyscale document and will be smaller.

There is no difference between Black and White and Black and White Adjustment. 

The Channels panel is down the bottom. If not go View > Studio > Reset Studio.

[Beagle]

Thank you very much

[Mollyc]

Odd. I do not have,  Document > Colour Format > Greyscale. I am running 1.7.3

[Sara72]

26 minutes ago, Mollyc said:

Odd. I do not have,  Document > Colour Format > Greyscale. I am running 1.7.3

You would choose: Grey/8 or Grey/16 from the format options.

[walt.farrell]

2 hours ago, Mollyc said:

Odd. I do not have,  Document > Colour Format > Greyscale. I am running 1.7.3

In 1.7, look for Document > Convert Format/ICC Profile...