What focal length for the most realistic pictures?

Started 2 months ago | Discussions thread
Magnar W
OP Magnar W Senior Member • Posts: 4,406
Re: What I think Magnar is actually asking and the answer.

Mike Fewster wrote:

We need you to add a bit more to the definition here. We have to say something like "what focal length is closest to that of human eyes and the way images made by those eyes are perceived by the human brain." Eyes from different species have different focal lengths and brains do something like post processing to the images that are formed by the eye. So, I think what Magnar is talking about is the image as perceived by the human brain, not the image as formed by the human eye.

We don't even see the picture as projected by the eye. Seeing is a learned process, and all our bodily senses are part of what we see. A lot of the information that is projected onto the cones and rods in the back of out pupils are filtered away before we are aware of what is in front of our eyes, and a lot of memories are added to what we "see" ...

And most important. Seeing is not a static process with a fixed field of view. We don't perceive the world as a series of still images.

Then we have to consider what we effectively see and where we want to draw the line in our definition. The Cambridge colour article is very good on explaining this. Actually, computational compiled images such as those used for hdr shots, macro stacked shots and in top range camera phones, are closer to what our brains do pp to the images from the eye.

The discussion is about "how real are the representation made with photography as a technique? Color? Other aspects that affects the differences between outer reality and the photograph as an object?

This is the challenge taken up by the Impressionist painters (and impressionism was a response to the first photographic images) when they tried to paint what the eye actually saw.

Sure. The impression painters tried to represent some aspects about how we perceive - how we "feel" the outer world. I find their approach impressive! So with later development, like Pablo Picasso, that added different moments and perspectives in one and the same frame. And others before and after those, exploring how we experience the world.

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