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cpl filter
Aug 20, 2017 11:20:54   #
innershield Loc: phoenix, az
 
what are the benefits or downside of leaving the cpl filter on my 24-70. f 2.8 lense. it seems to take good images indoors and outdoors.

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Aug 20, 2017 11:24:24   #
LensWork
 
The downside is the loss of light, generally 1 2/3-2 1/3 stops.

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Aug 20, 2017 12:12:21   #
Longshadow Loc: Audubon, PA, United States
 
LensWork wrote:
The downside is the loss of light, generally 1 2/3-2 1/3 stops.


I don't for that reason.

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Aug 20, 2017 12:27:53   #
innershield Loc: phoenix, az
 
I set the shutter at 1/125 and let the ISO take over. have shot indoors at iso 8000 with good results

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Aug 20, 2017 12:39:16   #
Mac Loc: Pittsburgh, Philadelphia now Hernando Co. Fl.
 
innershield wrote:
what are the benefits or downside of leaving the cpl filter on my 24-70. f 2.8 lense. it seems to take good images indoors and outdoors.


Benefit: It will help make the clouds stand out, pump up colors, cut glare and reflections from non-metallic surfaces.

Downsides: At focal lengths of less than 50mm you get an uneven sky, the wider you go, the more apparent they will be.

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Aug 20, 2017 12:40:10   #
GoofyNewfie Loc: Kansas City
 
innershield wrote:
I set the shutter at 1/125 and let the ISO take over. have shot indoors at iso 8000 with good results


But without the polarizer, your ISO could be much lower, your viewfinder much brighter and the image quality better.

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Aug 21, 2017 05:42:45   #
jerryc41 Loc: Catskill Mts of NY
 
innershield wrote:
what are the benefits or downside of leaving the cpl filter on my 24-70. f 2.8 lense. it seems to take good images indoors and outdoors.


I see no reason to keep it on all the time. It's usable only at 90° to the sun, and only if you want to eliminate reflections or enhance colors. Otherwise, you lose some light. I use Xume magnetic adapters, so I can take the filter off and pop it back on in no time, which is what I did yesterday at a car show. The sun was seldom at an angle that would make any difference, so I shot mostly without the filter.

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Aug 21, 2017 06:00:22   #
cthahn
 
Loss of light.

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Aug 21, 2017 06:23:51   #
Archiefamous Loc: Manhattan
 
With nikons it is advised not to use matrix metering with polarizers

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Aug 21, 2017 09:43:08   #
camerapapi Loc: Miami, Fl.
 
All polarizer filters loose 2 stops of light at full polarization. Do you like that in your daily photography? Polarizers are very useful filters that many photographers use routinely to darken the sky, saturate colors and eliminate or suppress reflections from non metallic surfaces.
It is not in the best interest of your photography to keep the filter on for all of your shots. Filters tend to get dirty which could be of disastrous consequences for your photographs. Polarizers shine for landscape photography and at times I have used them as a 2 stop ND filter.
In my case, I only use a polarizer when I have use for it.

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Aug 21, 2017 10:16:15   #
kerry12 Loc: Harrisburg, Pa.
 
I have found that taking the circular polarizer off indoors definitely makes a difference. Better off.

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Aug 21, 2017 10:23:44   #
OddJobber Loc: Portland, OR
 
GoofyNewfie wrote:
But without the polarizer, your ISO could be much lower, your viewfinder much brighter and the image quality better.

So, you're saying that's the only reason to remove it?

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Aug 21, 2017 10:27:36   #
GoofyNewfie Loc: Kansas City
 
OddJobber wrote:
So, you're saying that's the only reason to remove it?


Nope, just for starters...
I only put one on when I need it and that's not very often.

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Aug 21, 2017 12:01:07   #
amfoto1 Loc: San Jose, Calif. USA
 
Besides the significant loss of light with a CPL (which can be problematic when you're shooting in low light conditions... forcing you to use slower shutter speeds and/or higher ISOs)...

There also are plenty of times when the last thing you want to do is reduce or eliminate reflections, the way a CPL does. For example, all these images would be significantly changed if there were no reflections...



Personally I never install ANY filter unless and until it serves a real purpose. Lenses are a lot tougher than people think... and lens hoods and lens caps do a very good job protecting them, better than any thin glass filter ever could.

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Aug 21, 2017 14:20:34   #
photoman022 Loc: Manchester CT USA
 
The only advantage I can think of is that you'll have your CPL readily available whenever you need it. The downside, as stated, is the loss of light. You say it doesn't affect image quality, so I won't argue, but I would only use a CPL filter in those situations where I need (or want) a CPL.

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