Q Looses the 3-D of the M?

Started Jul 23, 2014 | Discussions thread
petrock Forum Member • Posts: 77
Re: what's 3-D?

[I haven't read down through every posting here, so someone else may have hit the same point(s).]

Over the years I've read many comments on the 3D-ness of Sigma. I don't have a Sigma, but I'll say this:

I have seen what to my eye is a very literal 3D appearance in Kodachrome slides as seen in a small viewer. Kodachrome is a 3-layer item, like Sigma. I wonder if, at the small distance scale of a viewer, the 3 separate layers are perceived as such by the eye---but bearing no relation to the actual relative distances of things in the shot.

I have also seen this appearance on the monitor screen. And again I wonder if, since the eye cannot focus all colors on the same plane, a 3D effect is produced, also with no relation to real relative distances.

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