Help with B&W Circular Polarizer

[Cincy]

Just got a chance to test my new polarizer. Ran out to a neighborhood park and took a few shots of the sky and clouds. Tried to shoot at 90 degrees to the sun and backed off of the strongest polarizing setting. All of my pics ended up unevenly exposed, with the center of the images darker than the edges. Any help as to why they ended up like this? Thanks.

 

[sssesq]

Look up Google "Circular Polarizer Wide Angle Lens" This is one source that appears:

Loading…

havecamerawilltravel.com

 

[Cincy]

Thanks for the response. Been surfing for an answer all night and your link was helpful! Also found another one that showed the exact issue I experienced. Net, with wide angle and shooting a blue sky, you are going to see uneven polarizing. Thanks

link to another article on the topic...

http://www.digitalphotomentor.com/w...lar-polarizing-filters-wide-angle-lenses-sun/

 

[sssesq]

Glad it helped. I have a B&W circ polarizer and have done the exact same thing a couple of times before I kept it in the Front of my mind...Slow learner?? :-D

 

[hotdog321]

Strange. I've used the Nikon CPL at 16mm on a full frame and was able to get pretty even results.





--
photojournalist
http://craighartley.zenfolio.com/

 

[sssesq]

Strange. I've used the Nikon CPL at 16mm on a full frame and was able to get pretty even results.





--
photojournalist
http://craighartley.zenfolio.com/

I guess you need the right combination of light and angles. Nice Half-Dome BTW.

 

[hotdog321]

Thanks! Yeah, you always have to watch for unevenness in the sky like a hawk, but I'm surprised at the unevenness of the B&W shot by the OP.

For what it is worth, I'm a Canon guy, but I've been very pleased with the Nikon thin ring CPL on my 16-35.

 

[Schroedingers_cat]

[No message]

 

[sssesq]

 

[Schroedingers_cat]

--
http://www.nightstreets.com
-
"Sick cultures show a complex of symptoms such as you have named...but a dying culture invariable exhibits personal rudeness. Bad manners. Lack of consideration for others in minor matters. A loss of politeness, of gentle manners is more significant than a riot."
This symptom is especially serious in that an individual displaying it never thinks of it as a sign of ill health but as proof of his/her strength. ...Friday, it is too late to save this culture--this worldwide culture... Therefore we must now prepare the monasteries for the coming Dark Age. Electronic records are too fragile..."
--Robert A. Heinlein in "Friday"
-
"Good judgement is usually the result of experience.
Experience, unfortunately, is usually the result of bad judgement."
-- Unknown Police Sergeant

Such an odd posting out of the blue (pun intended). R U sure U R posting to the right forum?? I agree that in a couple of hundred years people of that time will wonder about how we lived our daily lives 'cause there ain't gonna be any record...

Perhaps you have mistaken the signature for the comment ? Check the title instead.

--
http://www.nightstreets.com
-
"Sick cultures show a complex of symptoms such as you have named...but a dying culture invariable exhibits personal rudeness. Bad manners. Lack of consideration for others in minor matters. A loss of politeness, of gentle manners is more significant than a riot."
This symptom is especially serious in that an individual displaying it never thinks of it as a sign of ill health but as proof of his/her strength. ...Friday, it is too late to save this culture--this worldwide culture... Therefore we must now prepare the monasteries for the coming Dark Age. Electronic records are too fragile..."
--Robert A. Heinlein in "Friday"
-
"Good judgement is usually the result of experience.
Experience, unfortunately, is usually the result of bad judgement."
-- Unknown Police Sergeant

 

[TonyTguy]

the optimum solution is not to use round filters at all, any of them. You want a system like Lee square filters for dedicated landscape photography.

If you must use round filters depending on the lens more so wide angle zoom or prime you want low profile and you do not stack filters at all typically past two but sometimes just one filter.

Heliopan is the only system I am aware of that uses numbers on the polarizing filters where you hold the filter to your eye dial in the polarization and then just set the number once attached to the lens.

Typically these were used for non DSLR cameras or film based cameras like the Contax G2 or any Leica M camera, that said Leica also had a unique filter system for rangefinders where the polarizer was in a holder on a hinge that swing down over the lens is the way I can describe it mostly for film cameras.

Anyway. I would also use multi coated filters when possible and use the circular pol not the linear polarizer

I would stay away from variable ND filters as well 50/50 on color shifts from them, personally I would not use one if I had the option.

 

[sssesq]

--
http://www.nightstreets.com
-
"Sick cultures show a complex of symptoms such as you have named...but a dying culture invariable exhibits personal rudeness. Bad manners. Lack of consideration for others in minor matters. A loss of politeness, of gentle manners is more significant than a riot."
This symptom is especially serious in that an individual displaying it never thinks of it as a sign of ill health but as proof of his/her strength. ...Friday, it is too late to save this culture--this worldwide culture... Therefore we must now prepare the monasteries for the coming Dark Age. Electronic records are too fragile..."
--Robert A. Heinlein in "Friday"
-
"Good judgement is usually the result of experience.
Experience, unfortunately, is usually the result of bad judgement."
-- Unknown Police Sergeant

Such an odd posting out of the blue (pun intended). R U sure U R posting to the right forum?? I agree that in a couple of hundred years people of that time will wonder about how we lived our daily lives 'cause there ain't gonna be any record...

Perhaps you have mistaken the signature for the comment ? Check the title instead.

--
http://www.nightstreets.com
-
"Sick cultures show a complex of symptoms such as you have named...but a dying culture invariable exhibits personal rudeness. Bad manners. Lack of consideration for others in minor matters. A loss of politeness, of gentle manners is more significant than a riot."
This symptom is especially serious in that an individual displaying it never thinks of it as a sign of ill health but as proof of his/her strength. ...Friday, it is too late to save this culture--this worldwide culture... Therefore we must now prepare the monasteries for the coming Dark Age. Electronic records are too fragile..."
--Robert A. Heinlein in "Friday"
-
"Good judgement is usually the result of experience.
Experience, unfortunately, is usually the result of bad judgement."
-- Unknown Police Sergeant

ICUR right. But, my comment on the coming Dark Age still stands. O did you mean Under 28mm?

 

[Cincy]

A few pics I took today around town. Seems better than the results I had yesterday. Both of these were at 30mm or above. Noting that on other shots, the shots look okay on viewfinder, but on computer I'm seeing color variation in the blue sky.

 

[Cincy]

One more at 18mm. Okay but still seeing some variation.

 

[Schroedingers_cat]

O did you mean Under 28mm?

Oops

 

[rick decker]

The 2nd one of your post above shows the problem also. It is a classic problem with wide-angle and a polarizer. Light angle and where you have "dialed in" the polarizer affect the results. You can also get imag degradation if you don't have a good piece of glass.

I generally restrict my use of polarizer with wide-angle to reducing glare off vegetation.

For polarizing effect I use a digital action (NIK). You have some nice control options.

Rick

 

[Windancer]

For what it is worth, I'm a Canon guy,

That's okay we'll still be friends with you.........LOL :-D

Terry

 

[Windancer]

There is an unnamed person here that feels a 35mm lens is maximum width for a polarizer.

Terry

--
http://www.pbase.com/windancer

 

[hotdog321]

For what it is worth, I'm a Canon guy,

That's okay we'll still be friends with you.........LOL :-D

Terry

--
http://www.pbase.com/windancer

--
photojournalist

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[Reilly Diefenbach]

If you are going to use a polarizer, and you should, wide angle or no, realize it is a package deal, with post processing being necessary at times. A radial or linear gradient followed by a bit of judicious dodge and burn at about 2-3% opacity can clean up just about any polarizer shot.

LRCC circular gradient rough in

Notice I said almost any. Some are too much work and don't look right no matter what you do. It is a wise practice to take your shot with the polarizer, then take it off and shoot again. That way you'll have a fallback if the polarized shot cannot be made to work. Depending on the subject, it's often easy to mask the sky and replace the polarized sky with the non polarized.

I use a polarizer on each and every landscape shot I take, right out to a 200 degree panorama because the increase in foreground pop is just too good to pass up.