I bought a Hoya Pro1 Digital circular polarizer off eBay a while ago, but didn’t get a chance to try it until today. It rained last night and first half of the day, and then the sun came out. I drove up to Twin Peaks with my camera, tripod, and my 24-70/2.8L with the circular polarizer attached for a few shots. We were lucky enough to catch the rainbow, it was definitely an interesting sight.

Both of the images here were enhanced with the graduate filter in Adobe Camera Raw to bring out a bit more of the buildings, as they were both metering more to the sky. Exposure info can be seen at Flickr (you click on the image to go to its Flickr page, and then click on “more properties” in the EXIF info section). Black and white conversion was done by simply creating a Black & White adjustment layer.