I wonder if there is such a thing as the technically perfect image ie what you get if you follow all the 'rules' of photography.
For me photographic technique is about being able to control the technology so that when you press the shutter you get what you visualise.
Focus, exposure, contrast, colour - all of these things affect the mood of an image, so if you want to create a strong mood, by definition, you have to push one or more of these aspects beyond the everyday norm of what you would see in a straight forward snapshot.
Ansel Adams, the acknowledged master of technique, used filters, exposure, development, chemicals and darkroom manipulation to create dramatic images. Had you stood next to him when he made his images you would not have been able to guess how his interpretation would render the final print.
An image is technically perfect if it communicates what you want it to communicate to the viewer.