I need to prepare an image for professional printing and I want to retain as much quality as is possible.
The final file needs to be a 300ppi sRGB jpg.
The print needs to have a large white border so I am 'placing' the image into a new file where the canvas serves as the border.
In other words, I'm placing an 8x10 image into a new 12X14 file.
My question is: how do ensure that the quality of the original 8x10 image is not affected?
My current workflow is as follows:
1. Save the 8x10 as a 300ppi, 16bit, prophoto tif.
2. Create a new file with the dimensions of 12x14, 300ppi, 16bit, prophoto.
3. Place the 8x10 image into this file.
4. Save for web & devices at JPEG, 100 Quality, Convert to sRGB
I would probably just Save As a JPG. Save For Web might choke on a larger image like that.