CP filter and lens length

today i used a CP filter for the first time. the kenko CP was mounted on my 17-40.

the results were mixed but i certainly see potential for improving pictures.

one thing that i'm not too wild about is the partially dark sky which is most noticeable at the wide end of the lens.

do you use a certain length lens with your CP filter...or is there some other trick to getting a more even colored sky?

any insights to getting the best pictures with a CP or any non-technical links you can provide me with would be appreciated.

thanx!

ed rader

HTTP response: NOT FOUND | MIME changed to 'image/gif' | Redirected to error image by FOTOTIME

You can literally twist the filter while it's on the lens. This should vary the amount of affect. It all has to do with the way the light strikes the filter and enters the lens, and I'm sure someone else can explain this phenomenon better than me. LOL, gorgeous photo though. Brilliant colors.

angryhampster wrote in post #2139756
You can literally twist the filter while it's on the lens. This should vary the amount of affect. It all has to do with the way the light strikes the filter and enters the lens, and I'm sure someone else can explain this phenomenon better than me. LOL, gorgeous photo though. Brilliant colors.

thanx -- i actually like the way the sky turned out on this one but there are some others that are more over the top.

i did rotate the filter and kept an eye on shutter speed ... i figured that the slowest shutter speed means max effect ?

i also noticed more flaring without the hood !

ed rader

here's one that i did not like. th evening shadows could have had some effect too i guess.

ed rader

HTTP response: NOT FOUND | MIME changed to 'image/gif' | Redirected to error image by FOTOTIME

Others could explain this more accurately than i but it is caused by the position of the sun in the sky i think. (i should go check the excellent photography book i have but i'm too lazy)
Basically you are stuck with this effect,all you can do is work around it via composition and maybe timing(?)

This is a natural effect of using a CP. But the amount of variation depends on the angle you shoot at. If you're not at right angles to the sun you will get much more variation from left to right.

I use a CP all the time with my landscape shots and I can't live without it. I've got used to the variation that it doesn't bother me anymore.

with CPL, you pretty much cant use the hood right?

ekk_xt wrote in post #2140617
with CPL, you pretty much cant use the hood right?

That depends on the lens and hood design. With hoods that have a bayonet fit to the body of the lens, you can easily slip the hood on after you've adjusted the polarizing filter's position. With many wide-angle lenses using the bayonet hood mount, you can reach the filter to rotate it with the hood still mounted.

For lenses that depend on the filter threads for mounting a hood and a tubular hood design (not a "petal" design), you can generally (except for extreme wide-angle lenses) mount the hood to the filter and rotate the hood with the filter.

SkipD wrote in post #2140634
That depends on the lens and hood design. With hoods that have a bayonet fit to the body of the lens, you can easily slip the hood on after you've adjusted the polarizing filter's position. With many wide-angle lenses using the bayonet hood mount, you can reach the filter to rotate it with the hood still mounted.

For lenses that depend on the filter threads for mounting a hood and a tubular hood design (not a "petal" desigh), you can generally (except for extreme wide-angle lenses) mount the hood to the filter and rotate the hood with the filter.

that's an excellent idea. i don't avoid shooting in the direction of the sun and flaring was a problem yesterday.

thanks to everyone for your help.

ed rader

I've used the CP on the 70-200, 10-20, 24-70 and.

And yes you are right about the the dark corners...

MIME changed to 'text/html' | Content warning: script

MIME changed to 'text/html' | Content warning: script

TheAztech wrote in post #2141387
I've used the CP on the 70-200, 10-20, 24-70 and.

And yes you are right about the the dark corners...

That doesn't look like the Toronto I remember!

lol nope..I wish Toronto looked like that !

Tony-S wrote in post #2141966
That doesn't look like the Toronto I remember!