Sand filter for pool
: Order of fir filter
: K and n filter
Sand Filter For Pool
- (sand filters) Devices that remove some suspended solids from sewage. Air and bacteria decompose additional wastes filtering through the sand so that cleaner water drains from the bed.
- A filter used in water purification and consisting of layers of sand arranged with coarseness of texture increasing downward
- Sand filters are used for water purification. There are three main types; # rapid (gravity) sand filters # upflow sand filters # slow sand filters
- The oldest and most basic filtration process, which generally uses two grades of sand (coarse and fine) for turbidity removal or as a first stage roughing filter or pre-filter in more complex processing systems.
Pool By The Groyne
The sunsets have not been good the last few days with heavy clouds so I have posted another from East Head, West Wittering, West Sussex taken a few weeks ago when the weather conditions were more inspiring.
This one was taken with the camera about 12 inches above the beach and low angle gives an interesting view of the clouds reflecting in the pool
by the groyne left by the receding tide.
25 second exposure using B+W 6 stop ND Filter + Lee 0.6 ND Grad Filter over the sky.
Thanks for any comments you may wish to leave.
Something Wicked This Way Violet Filter
With violet grad
Have tried to lighten the sky with mixed success, its looks OK, but its misses the depth that this has, If anyone REALLY wants, i'll be happy to upload the other version for comparison!!
2.5 secs f/20@18mm ISO100, ND4 Grad, Violet Grad.
Applied an Unsharp mask, a little digital Velvia PS action (+1), Dodging on the rocks.
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- (月) 04:15:18|
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