reply to post by Maybe...maybe not
Originally posted by depthoffield
well, i bet that the flash on camera was used (automatically probably).
Originally posted by Maybe...maybe not
reply to post by Ventessa
2. ORIGINAL IMAGE WITH EXIF DATA:
Note: Use slider bar
so we have:
Flash: Flash fired
, compulsory flash mode
exposure time: 1/250
well... the flash WAS indeed used as i guessed.
and a bug flying 10 km/h at just 1.5 meters away from camera, means 10000 meters / 3600 seconds, or 2.77 meters/second.
During our exposure time which is 1/250 sec, (the time the exposure system is acting, letting ambiental light to be recorded on the senzor) the bug is
moving therefore 1.1 centimeters, giving an elongated blur, the dark part we see it.
The flash is started ussually at the begining of the exposure action, and is lasting less time, maximum 1/500 or ussually 1/1000 seconds or even
less...so, it (strongly!) illuminates the near bug in a half or quarter time, meaning the blur length is 5 or better 2.5 milimeters. So, the bug is
moving from left to right in the OP image.
We see this (aprox) 1:4 ratio in the image:
well, the above calculus is aproximative not taking in consideration the length of the bug itself, but esential is the idea behind how technique
Esentially, we have a double exposure, with different time intervals, when the flash is used, and if objects in image are moving, we record different
Just for fun, my button evolved in some kind of a moving thing:
On the other hand, it could be an alien ship, but we will never know that.
Personally i let this kind of samples behind, simply because i can't rule out the much common "bug-flash system". Inconclusive.