General info:
ModelCanon PowerShot A570 IS
MakeCanon
Basic shot info:
Focal Length23.2 mm; equivalent: 114 mm
Aperture ValueF5.5
White BalanceAuto white balance
FlashFlash did not fire, auto
Metering ModeMulti-segment
Shutter Speed Value1/403 sec
ISO Speed Ratings80
Advanced shot info:
Exposure Bias Value0 EV
Exposure Time1/400 sec
Exposure ModeAuto exposure
Max Aperture ValueF5.5
Exif-related info:
Exif Version2.20
Exif Image Width549 pixels
Exif Image Height400 pixels
Color SpacesRGB
CompressionJPEG (old-style)
User Comment
 Canada » Folder: traffic signs » Square lights (image 3 of 19)


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Square lights
Square traffic signals, mounted horizontally, in St. Jean sur Richelieu, Quebec. This is not a HAWK beacon, it is a traffic signal. The two yellow lights and single green light are inboard of the red lights. One intention of such signals is to avoid confusion due to red/green color blindness. Note the conventional traffic-signal pictogram to the right of the signal head.
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Images and captions by John S. Allen unless otherwise indicated.