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Noise Reduction? - noise reduction serijal

I inherited a beautiful photo of an accident, one of my models from a meeting yesterday evening between sets. However, unfortunately, was shooting at ISO 800 made because of the lapse of a time trial is best for me. It looks good when you shot in B / W, wear an uncertainty and changes in level, but I have it in the same color as the color model has amazing tattoos and hair colors. Any proposal to reduce the appearance of the noise? I use Photoshop Elements 5.0.