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07-18-2021, 06:45 AM   #31
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It's the other way around - "when do I put my CPL on"? CPLs can be a source color bias and they are an image "effect" filter which changes an image from its natural state. I use mine when I want to enhance sky contrast or kill certain reflections (again enhancing contrast), but otherwise, I don't use a CPL. They also have application in some telephoto shots to help with haze reduction but the sun has to be at the correct angle to accomplish this.

07-18-2021, 07:08 AM   #32
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I use UV filters all the time and almost never take 'em off. I have a CPL for a couple of lenses, but, echoing what others have said, rarely find a good use for it and I find that its effects are not worth the bother. The only time I've found it really useful was when I was taking pictures in a parking lot full of antique cars with all sorts of shiny stuff on 'em in harsh sunlight. Even then, it didn't do that much.
07-18-2021, 09:26 AM - 1 Like   #33
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OF course it depends on the situation, CPL's primarily reduce glare and allow the user to manipulate reflections on transparent/translucent surfaces such as windows or water.
07-18-2021, 10:12 AM - 1 Like   #34
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4) because Pentax cameras don't "need" a circular polariser!

A member noted the above earlier in this chain-
Could someone explain this please?
I guess I’m too naive...

07-18-2021, 11:52 AM   #35
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QuoteOriginally posted by Walkingwolf Quote
4) because Pentax cameras don't "need" a circular polariser!

A member noted the above earlier in this chain-
Could someone explain this please?
I guess I'm too naïve...
Lol, I think the poster isn't a fan of CPLs it was in reference both to your original question and the fact that sometimes there are better options, hence Pentax cameras not needing a cpl as such, using one is more of a choice thing
07-18-2021, 12:20 PM   #36
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Do you ever take off your CPL filter?

QuoteOriginally posted by dneira29 Quote
Do you ever take off your cpl filter or is it just a part of your lens at this point?
Is this a serious question? In all situations, where you do not want to reduce reflections, it only takes almost two stops, either in time or in aperture.

BR Nuftur
07-18-2021, 01:26 PM   #37
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Only for reflections now

Used to use them constantly in film days when working in color for landscape. The first time I used one with digital I was put off by the result, and digital post processing gives me much of what I want in a landscape shot. So, now they are important but occasional tools in my pro work to eliminate glare on a work of art (along with polarized lights) or reflections in casework for gallery installation shots.

07-18-2021, 01:32 PM   #38
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QuoteOriginally posted by Cerebum Quote
Lol, I think the poster isn't a fan of CPLs it was in reference both to your original question and the fact that sometimes there are better options, hence Pentax cameras not needing a cpl as such, using one is more of a choice thing
Haha
It's not so much a case of "not being a fan" as objecting to the often re-iterated misinformation that a circular polariser is "needed" on a "modern" camera and using this "fact" to justify the often exhorbitant prices charged for circular polarisers, when a perfectly serviceable linear polariser may well already be owned and, if not, usually readily available, albeit second-hand, at a fraction of the price.
I've no doubt there are cameras from "alternative" manufacturers that won't work reliably (if at all) with a linear polariser, fortunately, this is not the case with Pentax
07-18-2021, 03:55 PM   #39
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QuoteOriginally posted by kypfer Quote
Haha
It's not so much a case of "not being a fan" as objecting to the often re-iterated misinformation that a circular polariser is "needed" on a "modern" camera and using this "fact" to justify the often exhorbitant prices charged for circular polarisers, when a perfectly serviceable linear polariser may well already be owned and, if not, usually readily available, albeit second-hand, at a fraction of the price.
I've no doubt there are cameras from "alternative" manufacturers that won't work reliably (if at all) with a linear polariser, fortunately, this is not the case with Pentax
I buy cheap Hoya cpl because I am a cheapskate lolol. I actually don’t have any linear ones. Time to invest. Re cpol, I used one a lot early on, but lately.....I find if I am shooting limiteds or HD glass the image has enough saturation already.
07-18-2021, 08:49 PM   #40
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I only use them if I want to accentuate the blue in the sky. Apart from that I'm not 100% convinced that they make the picture better
07-18-2021, 08:49 PM   #41
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I use a polarizer somewhat frequently, more for reducing reflections on foliage than for skies. However if I don't see a benefit in a situation I normally remove it, since I don't want to lose any light I don't have to. Sometimes I want to use MF and want light for that; other times I want to limit the higher ISOs I have to use anyway to reduce subject motion (leaves, for example.) Of course sometimes I have to moderate the polarizer effect due to it removing too much reflection, usually from water. Other times the polarizer seems to remove at most about 90% of what I need it to no matter what I do. And annoyingly, about half the time I forget to adjust the polarizer entirely, so I get a completely random effect. Sometimes I'll realize that in time to reshoot; sometimes not.
07-18-2021, 09:25 PM   #42
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I tend to shoot a lot in low light, so the extra light loss from a polarizer means I almost never have it attached.
07-18-2021, 10:58 PM - 1 Like   #43
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Hi, I use CPLs quite a lot. The true colours come through a lot more. The hot sun in Australia can put glare on subjects, which destroys both detail and saturation.





I almost never use them on wide angles which include sky, because the amount of polarized light is never the same across the width of the frame.
07-19-2021, 06:38 AM   #44
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QuoteOriginally posted by StiffLegged Quote
Instagram is not the target for my images.
?????
QuoteOriginally posted by kypfer Quote
4) because Pentax cameras don't "need" a circular polariser!
?????
QuoteOriginally posted by dlhawes Quote
The only time I've found it really useful was when I was taking pictures in a parking lot full of antique cars with all sorts of shiny stuff on 'em in harsh sunlight. Even then, it didn't do that much.
I find a big difference, but I've also seen demonstrations that show big differences in quality (=effectiveness) of polarising filters. Some are quite weak. Mine are Hoya linear polarisers from the 1980s - there may be some better but I'm sure there are some far worse.

I take a lot of technical/engineering pictures (digital) and use a LPL to reduce glare from metal and painted surfaces. I am not trying to be arty, just want to show detail with no distraction. I also do landscape and might use it to reduce the bright reflections from leaves. As the filter is rotatated, a field of grass for example looks hugely different at the different angles.

I find the LPL filters rom my film days very effective on a DSLR, even though I have been told they are not supposed to work with digital cameras. Looking at the price of a quality 82mm CPL I shall stick with what I have. I certainly dont leave it on all the time though.
07-19-2021, 09:25 AM   #45
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It seems that there is not all that much love for polarizers.
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