Hi,
yes, the orange filter will make the image look to be more in focus. But thats related to the higher contrast of the image, not to the "real" focus.
Please be carefull that I´m talking about to different things. The one is a flat lens to make the Hero be in focus underwater. The other is colour filter to increase picture colours and contrast.
The flat lens can be used outside the water as well. This will not affect the image at all.
The orange filter cannot be used outside the water.
Please don´t get me wrong, but as I do not know how good your knowledge on underwater light is, let me give you some information...
Water will absorb colour related to the way of the light. From 3 meters on there is no red light in the water anymore. So if you are shooting an image 1,5 below the surface with 1,5 meters distance to your lens, there will be no more red in your image. Thats why most of the underwater footage looks blue or green. You will get this typical blurry blue green backgrounds. To avoid this you can either take additional lights. But this will only help in the first 3 meters from the lens. Everything further away will loose red again. So for this you take a orange or red filter just in front of you lens. This will add more red to your picture and it will have a natural balance. You can also do manual white balance on photo cameras in the water, but this needs to be done very often, regarding to the depth you are in. So most photographers and videographer do use filter to have a nice colour balance.
If you use this filter outside the water, everything will look red and not natural anymore. So you need to be able to remove that filter easily.
I´m looking to build something to have like a clip on filter for the hero.
best regards
Patrick
yes, the orange filter will make the image look to be more in focus. But thats related to the higher contrast of the image, not to the "real" focus.
Please be carefull that I´m talking about to different things. The one is a flat lens to make the Hero be in focus underwater. The other is colour filter to increase picture colours and contrast.
The flat lens can be used outside the water as well. This will not affect the image at all.
The orange filter cannot be used outside the water.
Please don´t get me wrong, but as I do not know how good your knowledge on underwater light is, let me give you some information...
Water will absorb colour related to the way of the light. From 3 meters on there is no red light in the water anymore. So if you are shooting an image 1,5 below the surface with 1,5 meters distance to your lens, there will be no more red in your image. Thats why most of the underwater footage looks blue or green. You will get this typical blurry blue green backgrounds. To avoid this you can either take additional lights. But this will only help in the first 3 meters from the lens. Everything further away will loose red again. So for this you take a orange or red filter just in front of you lens. This will add more red to your picture and it will have a natural balance. You can also do manual white balance on photo cameras in the water, but this needs to be done very often, regarding to the depth you are in. So most photographers and videographer do use filter to have a nice colour balance.
If you use this filter outside the water, everything will look red and not natural anymore. So you need to be able to remove that filter easily.
I´m looking to build something to have like a clip on filter for the hero.
best regards
Patrick
