It shouldn't be an issue, page layout programs will scale images based on pixel count. For example, if your image is saved as 240dpi and the designer places the image (by default it comes in at 100%) and scales it down to 50% the image will print at 480dpi. InDesign will let the designer know the pixel depth in the Info palette. But most designers don't understand dpi that well and just know someone told them somewhere along the line that images have to be at least 300dpi.


300dpi is based on 12 pixels per millimeter which was deemed the print standard. If you want to be technical about it it is actually 304.8dpi. So you could trip out the designers and save them at that. More than likely they don't know why it would be that.


200dpi is where the human eye can start resolve that an image is made up of blocks of color so the extra 100 (104.8) pixels are safety nets. Most printers preflights won't send of warnings until the image is stretch beyond the 200dpi threshold.


But to appease the designers do what most mentioned, image size, make sure Resample is off.