HOYA 52POL 52mm Polarizing Photo Filter

A polarizing filter is great for reducing unwanted glare from reflections, and will even help to enhance color and produce more saturated colors as a result. Remember that the filter's greatest effect is proportional to the sine of the angle with respect to the sun, which means that at 90 degrees the effect is greatest, and at 180 degrees, the least. This is no problem when using an SLR since it's all through the lens metering. But if you're a rangefinder user like me, you'll need to take this into consideration when correcting for your exposure. You can do this by using a spotmeter set to the exposure settings on your camera and then taking a reading with and without the polarizing filter in front of the spotmeter, subtracting the two, and then dialing in that correction on your camera. It's not 100% accurate but it's pretty darn close. This will enable you to get the most out of your filter. When I haven't had a spotmeter, I've just used bracketting to make sure I get enough exposure. Although that wastes an exposure or two, it usually works okay for those times when you don't have your meter.