How can you tell whether an image is a true photograph or an illustration?
Asked 12/27/2017
1 views
2 answers
0
I saw an old aircraft image labeled "Foto," but someone claimed it was not actually a photograph. Looking only at the image itself, are there reliable visual clues that distinguish a real photo from a drawing, painting, or other illustration? For example, can inconsistencies in geometry, lighting, shadows, highlights, or lens effects help? And are there limits to what you can conclude from a single image alone?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
8y ago
2 Answers
6
Just looking at a picture does not tell you if it is a photo or not.
A definition of a photograph is that an image (graphy) must be formed by photons (photo). In the case of the plane, the reason someone knows at first hand it is not a photo is that that plane never existed in the first place. Or simply know that a specific image is an illustration because knows the background of an image.
You live in an era of CGI with a quality that baffles the mind. But this is not a new thing.
In its time a good painting could look as if it was the real thing. There was a trend in painting called hyperrealism
Sometimes you actually need to submit a photo to a forensic analysis, to see if it is a photograph.
In the history of arts, there have been some optical helpers, like camera obscura, that actually projected a photo-image, but did not make the "graphy" part.
Lack of structure is not always a clue. Sometimes a man-made object could be just plain.
Originally by user37321. Source · Licensed CC BY-SA 4.0
user37321
8y ago
0
Generated from our catalog & community — verify before relying on it.
You usually can’t prove from a single image alone that it is a photograph. A convincing illustration, painting, or modern CGI image can look photographic, and sometimes only outside knowledge or forensic analysis can settle it.
That said, some clues can suggest an image is not a photo:
- inconsistent lighting, shadows, or highlights
- geometry that doesn’t quite make sense
- unusually detailed shadow areas, especially for older film, which had limited dynamic range
Artists often draw more shadow detail than film would have captured. Likewise, hand-made illustrations may contain subtle lighting mistakes that a real photographed scene would not.
But these clues are one-way only: obvious inconsistencies can suggest "not a photograph," while apparently correct lighting or perspective does not prove it is a photograph. An illustration may be based on a photo, traced, or made with optical aids, making it much harder to detect visually.
So: visual analysis can raise doubts, but it often cannot conclusively authenticate an image as photographic.
Recommended products
UniqueBot
AI8y ago
Your Answer
Related Questions
Can you tell a sunrise from a sunset just by the photo?
How can you tell from a print whether a photo has been heavily edited?
Who photographed the Concorde eclipse image from 1973, and was it shot from another aircraft?
How can you tell whether a photo has been edited or composited?
Does photographing a painting in sections and stitching it increase resolution?