FAQ 23 • sasibe
“standard automatic settings’ invisibility/blur effects”
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2301. What is the “sasibe” standard?
The “sasibe” standard is what ensures that in a TTG photograph, moving objects are not rendered less visibly than standard automatic settings’ invisibility/blur effects (“sasibe”) render the same subject.
As a result of sasibe, viewers of a TTG-qualified photo are shown moving objects with the same visibility that the public is accustomed to seeing in photographic depictions of moving objects.
sasibe is listed as a requirement in both P4 and P5.
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2302. What does sasibe mean in the real-world?
• The sasibe standard ensures that in TTG-qualified photographs, familiar moving objects — cars moving on a city street, people walking on the sidewalk, waves on a body of water — are not rendered as invisible or unrecognizably blurred.
• On the other hand, the sasibe standard allows objects moving at very high speeds — a bullet fired from a gun, the wire spokes of a bicycle being ridden at speed, the blades of a high-speed vertical fan — to be rendered as invisible or unrecognizably blurred.
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2303. Why is sasibe needed?
Because long exposures permit deceptive depictions of moving objects.
Since there is no way to establish a maximum exposure length that applies in every situation, TTG instead curbs the deceptive effects of long exposures.
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2304. How many photographers have to worry about sasibe?
Very few.
The photographers who most often need to pay attention to sasibe are photographers who manually choose long exposures.
(Smartphones on automatic/default settings will not create sasibe issues, because sasibe is literally defined as “what happens when cameras are on automatic/default settings.”)
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2305. What ways of depicting moving objects are permitted in TTG photographs?
There are a maximum of four ways that moving objects can be depicted in a TTG photograph, although sometimes only one or two of them are available for a particular scene:
A. frozen (“still”)
B. blurred but recognizable
C. unrecognizably blurred
D. not visible at all
The faster an object is moving through the frame — and/or the slower the shutter speed — the further down the A–D list (above) the rendition of the object will be.
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2306. How does sasibe work in daily use?
It’s simple: TTG photographs cannot depict moving objects at a level lower than sasibe determines:
A. frozen (“still”)
B. blurred but recognizable
C. unrecognizably blurred
D. not visible at all
Example of using sasibe: If a smartphone set to Auto settings in “Photo” mode indicates that a moving subject would be rendered as motion-“blurred but recognizable” (“B” above)...
. . . then the TTG photographer could depict the moving subject as “A” or “B”—
— but depicting it as either of the two levels below where the Auto setting placed it (“C” or “D”) would disqualify the photo from P4, P5, and TTG.
Note that TTG photographs can always depict moving objects at a level higher than the Auto setting determines: for almost a century and a half, photography has been valued for its ability to “freeze” motion.
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2307. When manually choosing their shutter speed, how do TTG photographers determine which of #2305’s four “levels” various moving objects fall under?
A. They snap a test photo of the scene with any modern camera or smartphone that is set to automatic settings.
B. They then refer to that test photo when choosing their camera settings.
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FURTHER READING
Guide to photographing moving subjects
Photographing waves
Photographing waterfalls and fountains
Why doesn’t TTG allow my favorite manipulation?
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