My texture is washed out in the render, bit not in the preview I'm making a mock-up of a poster for my portfolio, but for some reason the texture of the poster is really washed out in the render. The rest of the objects which are just materials (not externally created image textures) seem fine, but the textured image looks terrible.



It looks as intended in the render preview while editing, but not in the actual finished render.

This is in cycles render.
The viewport renderer and seems to evaluate overlapping faces differently. In your scene, three faces from different objects are at the same position. Simply moving your textured object in front of the others will solve the problem.





On a side note, did you intend to connect a Normap Map output with a color input?