When taking in the attributes of a real photograph, there are SO many things that contibute to "realism". A lot of those attributes are actually an "incorrect-ness" with the photograph that we have seen so many times over our lives, that if we DON'T see them, it looks "strange" or it may look 3D, which in comparison to photo's look too "perfect" Real photo's can have; Soft shadows, a mix of crisp and blurry reflections, grain, bokeh effects, chromatic abberations, areas of desaturation, areas of oversaturation, color bleeding, barrel distortion, cautics, color radiation, etc. HDRI is just one attribute of realism. It's a BIG attribute, one I use a LOT these days, but ther are other parts to the realism puzzle. ;o) AgentSmith

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