Finding a "3D pop"

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jtra
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Finding a "3D pop"
3 months ago

Somewhat continuation of this thread:

http://www.dpreview.com/forums/thread/3684503

There were many different answers to for the explanation of "3D pop". But most of them were just anecdotic, that is based on casual observations rather than scientific methods.

Lets do it in a more scientific way. Find an answer to a question "how can a lens influence 3D pop?"

Method: take two images of the same subject with two different lenses or lens settings. Try to change only one thing at a time (different lens, but same aperture and focal length; same lens but different aperture; same lens but different focal length).
Show that one has more 3D pop than other, show it on picture that fits screen, no 1:1 crops should be necessary. Do it for yourself as excercise or present it here if you wish.

Special areas of concern:

  • Focal length and distance/perspective. These two are clearly compositional elements of photograph, however you still need to have right lens for that. Perhaps some combinations of subject, FL, distance are not good for 3D pop. Too close distance and wide FL may cause perspective distortion.
  • Depth of field and amount of background blur (perhaps measured by area of out of focus highlights relative to area of picture).
  • Bokeh type (see my article on bokeh http://jtra.cz/stuff/essays/bokeh/index.html )
  • Vignetting or it postprocessing.
  • Postprocessing of sharpness. Almost all lenses are good enough be sharp in images fitted to typical screen. Not all are sharp at 1:1 crops with high megapixel camera, but that should not matter with correct processing. Output sharpnening for the screen could be important. Be careful with what you sharpnen. If you sharpen on blurred areas, you might get more distracting bokeh.
  • Things may be different for scenes where subjects are in layers of different depth and scenes where there is continuous transition from near subject to far background.
  • I have seen some pictures in previous thread that were kind of 3D when viewed at full screen but not in smaller preview. Viewing conditions are important for evaluation that is why I wrote to evaluate at full screen. Viewing distance, screen size and it resolution change depth of field.

There are other things that photographer may do to create a "3D pop", like lighting or affecting subject itself. Those are most important, but perhaps not of prime interest in Nikon SLR Lens Talk Forum.

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