Photography

cshimokita
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hahaha... A low light example... (photo included)

Here is a look into the exif data from a low light photograph.  It's a January 2017 photo of Aomori City walking back to the hotel after dinner.

Ref 01 : a lone taxi in Aomori City after dark (c) CLH - January 2017




Ref 02 : Exif and APEX reference data

We see that the Brightness Value is a negative number, and I used -1 Compensation, but the numbers still crunch properly.  A Bv of -0.38 works out to be 2.628 candelas/m2.  According to the reference charts that amount of light is the same as: floodlit buildings, monuments, and fountains, which seems about the correct level.

As a reference a Bv of -3.09 (.04 candelas/m2) is the amount of light you get from phosphorescent markings on a watch dial after 1 hour in the dark.

Here is the same Aomori street location from Google Street View as of September 2015... the same taxi and definitely the same white vehicle parked on the right... unbelievable  ; ) 

Ref 03 : (c) Google Street View - September 2015