I always have a hard time when preparing my photos for printing at a lab; especially large format.
I wanted to print out an 11"H x 14"W recently and I started reading and reading and reading. According to this I needed to crop the picture to a ratio of 11:14. That part made sense and that is what I did. During the export, there is a box labeled resolution. This is the aspect of printing that always confuses me. According to this chart I can expect "Superb" quality for an 18MP camera for images 11" x 14" with a DPI setting of 350.
Using both of those two links, during the export I resized the image via the dimensions option to 11 x 14 and set the "resolution" to 350pdi.
Is this the correct procedure? Can I expect a "Superb" print doing it like this? If not, where did I go wrong?
The picture was captured with RAW using a Canon 7D. I am using Adobe Lightroom 4.
Both answers mention down-sizing. Is that the act of changing the dimensions during export?
My biggest hangup currently is the DPI. Any printing I might do, I just want the DPI to be the number where no information needs to be added or removed by the software. I guess the native DPI of whatever pixels are left over after the crop is what I'm trying to achieve.
Assuming my image output is 4399 W x 3456 H after the crop. If I want to be sure that the printed DPI will be 300 or more, if I do 4399 (cropped side) / 14 (inches of the print I want to make) = 314.214. To me, that means that the photo at that resolution will yield a print at over 300dpi. Is that all there is to it or am I missing something with that calculation?