Does anyone use the freewell CPL filter?
I have been trying it out for a couple of days now (part or the all day kit with 8 filters) and I am a tad puzzled.
When do you have the maximum effect, I thought it would be when the lines of the base and turntable part aligned?
I use pol's on my DSLR a lot but the effect on the little champ kind of underwhelmed me....
Perhaps I need to take it to different circumstances....
Or use one of the other pol FileMerge (combined with ND)...
You can see in the one photo there are artifacts on it from improper angle to the sun.
Ideally, you want it 90 degrees to the sun.
When the lines are together, you are at zero ... no effect.
Before putting on, hold one up to the light and turn it until you get the right amount of shade, put it on and go.
I use a Freewell polarizing filter when flying over water a lot in order to reduce the glare on the surface. There is just one orientation you need for this application. When looking down at about a 45 degree angle to any body of water, turn the filter until the minimum amount of reflection is present and use that orientation everywhere over water. In this case, the direction to the sun is not important. I took these two shots from one of my docks using a stationary MA2. The farther away from 45 degrees, the less the effect; pretty much none at 90 degrees. The first image was set to a rotation of 90 degrees on the drone (small white line to right or left).
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So the lines opposite to each other is probably max effect?
Forgot the 90 degree to the sun.
Now so used to flying with the sun in my back (180 degrees)…
Oeps…
GaryDoug Posted at 9-18 14:27
I use a Freewell polarizing filter when flying over water a lot in order to reduce the glare on the surface. There is just one orientation you need for this application. When looking down at about a 45 degree angle to any body of water, turn the filter until the minimum amount of reflection is present and use that orientation everywhere over water. In this case, the direction to the sun is not important. I took these two shots from one of my docks using a stationary MA2. The farther away from 45 degrees, the less the effect; pretty much none at 90 degrees. The first image was set to a rotation of 90 degrees on the drone (small white line to right or left).
Can imagine you use it for that indeed….
I am looking for those intent blues, reds and greens….
Unfortunately I have to confirm that Freewell filters are fitted without quality control. Of my 6 cpl filters, none are set so that the maximum dimming effect coincides with two stripes. The differences reach up to 45 angular degrees. The company and the price are a joke of the customer.
Maximum dimming effect is going to vary with lighting conditions and is not set to any angles denoted by stripes on the filters. Those are there for reference.
The only way to dial in the maximum effect is to point at what you want to filter and rotate the filter until you get the desired effect as shown on your FPV screen.
I understand that the angle of light is important, but if the filter placed in front of your computer monitor doesn't dim to its maximum where two lines overlap, then will you be flying into the sun when you want to reduce reflections on the water. Shouldn't this be expected from cpl filters?