General info:
ModelCanon PowerShot A590 IS
MakeCanon
Basic shot info:
Focal Length7.9 mm; equivalent: 39 mm
Aperture ValueF3.2
White BalanceAuto white balance
FlashFlash did not fire, auto
Metering ModeMulti-segment
Shutter Speed Value1/1002 sec
ISO Speed Ratings160
Advanced shot info:
Exposure Bias Value0 EV
Exposure Time1/1000 sec
Exposure ModeAuto exposure
Max Aperture ValueF3.2
Exif-related info:
Exif Version2.20
Exif Image Width425 pixels
Exif Image Height567 pixels
Color SpacesRGB
CompressionJPEG (old-style)
User Comment
 Sunken reflectorized markers, Waltham, Massachusetts » Old marker (image 5 of 10)


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Old marker
The entrance ramps from Route 20 to Route 128 use older markers which are flush with the road surface and pose no significant hazard to bicyclists. These markers offer no advantage to bicyclists here though, because bicycling is prohibited on Route 128, a limited-access highway. It is reported, however, that flush markers suffer from durability problems.
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Images and captions by John S. Allen unless otherwise indicated.