I am interested in "best practices" advice for creating cropped versions of placed images in InDesign after I've designed a document, in preparation to send the document to a printer. My current workflow is as follows:
What would be ideal is a function that essentially does this:
I could of course go into each of my high res source images, open them in photoshop, set the dimensions of the canvas to the dimensions of my crop window in InDesign, and try to eyeball the crop, but in many cases I've been very meticulous about placing, resizing, and cropping those images in context of the design document (rather than isolated in a photoshop window) so it seems like a poor choice to try to do all this work again in a separate program.
Is there any method/feature that would help here?
That's great, but in that case, I shouldn't be sending a 300dpi 8x10" image to the printer - I should be sending them a 300dpi 2x5" image with the exact crop that I specified when I was designing in InDesign - otherwise I'm just wasting space.
300ppi is a random convention, sampling an image down from 600ppi certainly won't make the output better. But if you want to adhere to some specific pixel resolution requirement, export a print ready PDF (PDF/X) and set the resolution at export.
Right - downsampling wouldn't make the output any better but it would throw away all that extra information that I don't need - I will try exporting the print ready PDF though - that might solve most of the problem. Thank you!