What focal length for the most realistic pictures?

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goodytwoshoes
goodytwoshoes Regular Member • Posts: 362
Oh yes, Rolleinut, there is and you should know ;-)

75mm 3.5 Planar 2nd Version

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goodytwoshoes
goodytwoshoes Regular Member • Posts: 362
Zeiss Planars lead the way

... and then depending on the grade of enlargement and subject distance

you have to chose the appropriate f-stop.

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SonyOB Senior Member • Posts: 1,015
Re: What focal length for the most realistic pictures?

Paul Barnard wrote:

Magnar W wrote:

Trollmannx wrote:

Assume one sees the Eiff (just as an example) and take a photograph.

Is the photograph realistic if it is:

- a sharp and well focused color image?

- a sharp and well focused black and white image?

- an unfocused - taken with a wide angle lens?

- taken with a normal lens?

- taken with a telephoto lens?

- an abstraction, showing traces of the Eiffel Tower?

- an abstract image, where the Eiffel Tower is not recognisable?

Natural size! And 3D.

Did you miss an 8 out in that size?

So realistic that you eat your SD card with a fine Chianti?

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Stan Huntting
Stan Huntting Regular Member • Posts: 274
Re: Zeiss Planars lead the way

goodytwoshoes wrote:

... enlargement and subject distance

BINGO! Four pages into this thread and the other shoe finally drops!

Magnar framed the original question beautifully - too bad many contributors didn't read that post. But, what Magnar left out was any bounds on how the desired "natural" image will be viewed.

Are we to judge the naturalness of a captured image as a print, hung on the wall? What size print, how is it matted/framed and viewed from what distance? Is it displayed electronically? On a VR headset, the screen of a phone just beyond my face, a notebook display in my lap, a workstation display or a large 8K TV on the wall? Or perhaps, is the view through the EVF all that really counts.

My point is that (un)naturalness of any focal length/sensor size combination is a function of the viewed image size and viewing distance.

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Entropy512 Veteran Member • Posts: 4,816
More than just the focal length.
1

Atypical optical structures not normally present in most camera lenses are required for realism.

Exact nature of these optical structures is highly variable. In my case, the required optics can no longer be purchased. https://www.zennioptical.com/p/rimless-flexible-memory-titanium/2164?skuId=216411 appears to be structurally similar to what is required to achieve maximum realism.

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Trollmannx Veteran Member • Posts: 6,062
Re: More than just the focal length.

Entropy512 wrote:

Atypical optical structures not normally present in most camera lenses are required for realism.

In my opinion reality is needed for realism.

Photographs can be interpreted as more or less realistic despite beeing only a representation of the real thing.

My question: do photographic realism require camera lenses with those structures normally not present in most camera lenses to produce "realistic" images?

Vision should work the same way wether looking at reality or at images.

Just curious.

Exact nature of these optical structures is highly variable. In my case, the required optics can no longer be purchased. https://www.zennioptical.com/p/rimless-flexible-memory-titanium/2164?skuId=216411 appears to be structurally similar to what is required to achieve maximum realism.

Rol Lei Nut Veteran Member • Posts: 4,935
Re: Oh yes, Rolleinut, there is and you should know ;-)

goodytwoshoes wrote:

75mm 3.5 Planar 2nd Version

From the Rolleiflex 6x6 TLR?

Certainly a very nice interpretation of reality...  

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