Kayak at sunset, photo dark compared to video, due to 4k unbinned pixels of image - GO PRO example

Here is a crop of a still image I took with the little Hero camera near Dexter 
Michigan.   What was interesting about this picture was it was dark.   This is 
not the original photo but a painted and touched up version of it.

The actual HDTV video was much brighter at that time of day and when I switched 
the camera over to still and took a photo I got a nice large shot but it was 
dark.   Why?

Well in astronomy many cameras are setup to offer grouping of pixels and sensor 
pixels are used as a group to get lower resolution still images which are using 
a set of pixels effectively causing a feature known as"binning".   It turns out 
the Go Pro uses a binning kind of process which groups pixels from a large 4k 
sensor and causes a smaller image to be much brighter.   When it was using all 
the pixels and getting higher resolution the image was much darker.   The 
exposure is so dark that a blurring of colors and undersaturated blacks occur in 
the original image.   I had to darken and change contrast a bit and used a 
surrealistic + filter inside Photoshop before using a painting filter.  This 
allowed me to get a half decent but still dark painting which of course was 
cropped for this version as well, reframing the image a bit.

The Go Pro hero is a pretty nice camera, but it doesn't match the capabilities 
of a nice dslr camera. 

A request from my friends wife which saw the original was for me to turn the photo

into something black and white, with almost no color.  Due to the limitations

of the photo being very dark and over-saturated with greens, I found pushing the colors

and working it more like a painting gave a better result. 

Kayak at sunset.