polarising lens filter

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CrippledSandwich

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Chris
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does anyone know if there is a way to cheat a polarising lens filter through Photoshop or Gimp?

Is it possible?
 
Not as far as I know. :nono:

It's one of the few filters which can't be replicated in post processing.

The others are Neutral Density filter, and to some extent, a Graduated Neutral Density filter. There may be others, but these are the one which come to mind. :)
 
redhed17 said:
Not as far as I know. :nono:

It's one of the few filters which can't be replicated in post processing.

The others are Neutral Density filter, and to some extent, a Graduated Neutral Density filter. There may be others, but these are the one which come to mind. :)
Click to expand...


i thought as much :'(
 
You can have a go at darkening skies in post processing, especially if you use HDR, but a polariser looks more natural and is so much easier.

What you cannot do it increase saturation in the way a polarisers does, by cutting random reflections. My polariser is practically a permanent fitment with landcape type walkabout stuff, and I'm thinking about getting the new Hoya HD polariser which only increases exposure by 1.1 stops so there's hardly a reason to take it off.
 
HoppyUK said:
the new Hoya HD polariser which only increases exposure by 1.1 stops so there's hardly a reason to take it off.
Click to expand...

You're on a commission for sales aren't you? :lol:
 
as a certain Scottish engineer once said...you cannie change the laws of physics ;)

A polarising filter affects the plane of polarisation of light, in the process affecting saturation and reflections.

What are you trying to achieve in PS? The saturation aspect or reflection reduction? one can be emulated in ps the other can not.
 
One trick you can try, and that applies to skies. It doesn't always work as you need to have an initial amount of "Blueness" to start with. It also only really works with RAW files in either ACR or Lightroom.

Go to the HSL tab in Photoshop or the HSL panel in Lightroom. Now slowly reduce the BLUE luminance. This darkens the blues in the image. Don't be excessive with this as the blue channel is the most "noisey" of them all. You can slightly increase the blue saturation as well, but keep it reasonable.

Handle with care as you can so easily over do it
 
Chappers said:
One trick you can try, and that applies to skies. It doesn't always work as you need to have an initial amount of "Blueness" to start with. It also only really works with RAW files in either ACR or Lightroom.

Go to the HSL tab in Photoshop or the HSL panel in Lightroom. Now slowly reduce the BLUE luminance. This darkens the blues in the image. Don't be excessive with this as the blue channel is the most "noisey" of them all. You can slightly increase the blue saturation as well, but keep it reasonable.

Handle with care as you can so easily over do it
Click to expand...

thanks Chappers i will try and give that a go
 
N1ntend0 said:
as a certain Scottish engineer once said...you cannie change the laws of physics ;)

A polarising filter affects the plane of polarisation of light, in the process affecting saturation and reflections.

What are you trying to achieve in PS? The saturation aspect or reflection reduction? one can be emulated in ps the other can not.
Click to expand...

im trying or searching for a way if possible to emulate a polarizing filter through photoshop. however i think it might just be easier to buy one lol.

i have herd that the more to pay the better they are though, i did have my eye on a 6quid cheapy from ebay but im having second thoughts now
 
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