View Single Post
Old 7th July 2018
pdk42's Avatar
pdk42 pdk42 is online now
Full member
Join Date: Apr 2013
Location: Leamington Spa
Posts: 5,237
Thanks: 362
Thanked 1,166 Times in 871 Posts
Likes: 120
Liked 5,525 Times in 1,774 Posts
Re: Printing very large!

When upsizing, the trick is to use interpolation to add pixels that wouldn't otherwise be there. Bi-cubic interpolation is the most common. This means that you'll be seeing apparently more DPI than a straight enlargement calculation might indicate. You obviously can't add detail that isn't there, but using interpolation will preserve apparent sharpness if you go looking closely.

Apps like Photoshop will do interpolative upsizing so you can do it before you send the image for printing. I'd hope that a decent print shop would do it for you though before they print if you hadn't done anything yourself.
E-M1ii, Pen-F and too many lenses
Portfolio Site
Reply With Quote