Preserving Vectors in Photoshop Files
Sandee “vector babe” Cohen mentioned this in our latest podcast, but I figured I’d better write it up here: If you have type layers (or other vector layers) in Photoshop and you want to maintain those mathematically pure vector lines while bringing the image into InDesign, you should save the Photoshop file as a PDF — not a PSD or TIFF!
Both PSD (native Photoshop document) and TIFF will rasterize the vectors (turn them into pixels) when you print or export from InDesign. Vectors are maintained, however in PDF. (They’re also maintained in EPS files, but I try to avoid EPS files when I can… it’s a dying file format. We’ll have to cover the relative merits of PDF vs. EPS some other day.)