Photoshop Half Page Advert size - Is it A5?

[Draeger]

Probably a daft question but a friend has asked me to knock up a very basic advert they want placed in a magazine (full size magazine so I assume A4) which is being used to support a local charity event. Could someone tell me what size I need to use in Photoshop? I assume I'll need to leave the outside 3mm edge free from anything for 'bleed' purposes as far as printing it is concerned?

Are there any templates I could use which show the bleed required for a half page advert?

Ta muchly.

 

[Draeger]

Will do, I'll check the exact dimensions required. I've dabbled with Illustrator but don't use it much so I was just going to use PS as I'm lazy and know my way around it fairly well. Will have a play with Illustrator first.