Circular Polarizer

[navcom]

David's right. That's polarizer transition. At 18mm, it's not uncommon.

[theosus]

Originally Posted by navcom

David's right. That's polarizer transition. At 18mm, it's not uncommon.

I was happy otherwise. Usually the blue ridge mountains are covered in haze and come out foggy looking. you can even see it - the brown layer just above the mountains on the horizon. This is about the clearest shot ive ever gotten in the mountains.

[Crossfire905]

That looks like the same effect I wound up with in this shot, taken with my HP PhotoSmart C618, a 0.5x wide-angle add-on, and a circular polarizer in front of the wide-angle. I assumed this happened because the lens was just a bit wider than the effect of the polarizer, causing it to fall off at the upper corners. I guess I assumed correctly, then? And it's called polarizer transition?

Linked from one of my Facebook albums, so there's some loss of quality and a total loss of EXIF data, damn them.



Lesson learned: I guess I probably don't want to mix wide angles with polarizers.

Location: Smith Rock State Park in Terrebonne, Oregon, early evening [6pm or so], 4th of July 2010.

[pulse64]

Originally Posted by theosus

Was using canon t1i with Kit lens (18-55mm - set on 18 in this case), sunpack circular polarizer. Not sure where the sun was in this pic.

The gradation across teh sky is quite crazy. What causes this? The alignment of the cpl?

[RecurrentNerve]

Yes, and the angle of the camera relative to the sun. Polarisers work best with the camera pointing at right angles to the sun. Pointing towards or away from the sun will mean the polariser has very little effect.