Gene51 wrote:
The answer you seek, Maren-San, is here:
http://www.photokaboom.com/photography/learn/printing/resolution/1_which_resolution_print_size_viewing_distance.htm
So called "enlarging" software does NOT add detail, only interpolated pixels and some microcontrast enhancement, particularly on edges. It also often adds some undesirable artifacts.
This question comes up several times a week, yet the answer does not change - its all about viewing distance and human visual acuity, which diminishes with increasing distance. A 40x60 print needs only 40 ppi or so to look pretty sharp, which translates to 1600x2400 px, or just shy of 4 mp. Remember the days of multiplex theaters? The great looking Sony 4K films shown in the premium screening rooms are only 3840 x 2160 px, or 8.3 mp. Most people are unaware that with most images you really don't need super high resolution, nor do you have to resort to interpolation software to raise the pixel count - especially if you are anticipating normal viewing distances.
The answer you seek, Maren-San, is here: br br ht... (
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Thanks Gene51. Good website.