I have to design a printed poster (cmyk) for a trade show. It will be in Adobe Illustrator. The copy is all white and the logos in it are too (well, one logo is all white with some 'less opaque' 50% white transparent elements). The logos and all copy will be laid over a blue background, and in some places, over a photograph.
As this is white over a darker background, do I need to knockout the logos/copy? Or does the printer typically do that automatically? Is there something I need to do differently with the 50% transparent white areas of the logo? I'm not too familiar with how to knock stuff out on my own, and to be honest, I'm not sure if I need to! Do I?? I don't have access to the printer for questions as this is outsourced.
Please advise. Thank you so much.