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Re: OT - photographers why do I lose my blue sky?


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Posted by M Diesel on August 21, 2012 at 16:23:42 from (12.24.61.12):

In Reply to: OT - photographers why do I lose my blue sky? posted by SweetFeet on August 21, 2012 at 11:08:40:

Quoting Removed, click Modern View to see

Thing is the camera sensors have to deal with direct light and reflected light. Reflected is much weaker. They don't have the ability to handle that much span. Your eye does a better job but in a limited way and it makes them respond differently. Your eye only pays detailed attention to the what you are looking at directly. The camera isn't given that luxury.

Sky blue is actually a light blue, which is actually white with less of the spectrum down towards green to red. In trying to get something usable in the dark areas on the image sensor the camera has to lengthen exposure time and eventually reaches a compromise and calls it good. Bad part is the Red Green and Blue sensors are all reporting about the same value at that point in the bright regions. (Technically the sensor cells are all the same, they just have different filters on them.)

Since cloudy days don't let through direct light from the sky, they make for better photos. Same can be said about having the sun at you back. Everything becomes a reflection and the light is much more uniform.


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