Self Portrait: Fill-in Flash and long exposure

Technical notes:

Trying to learn a little more, on ‘fill-in flash’ and movement.

In this instant, the ambient light was bright / hazy. Because I was using HP5 @ 400asa, [ie quite fast for the circumstances, I put a polarizer filter over the lens, to ‘loose’ about 2 stops. So, with lens set at f22, I produced a ‘balanced’ exposure by measuring the daylight then reducing it by 1 stop. Likewise, flash was set at f16, thus reducing its light by 1 stop. Added together, exposure should be about correct. Flash freezes me, producing a sharp image. The background, out of range of the flash, is blured, because the shutter speed was 1/4 sec.