Similar to the ordinary polarizing filter, except rays go circular, not linear, after passing through the circular polarizing filter. It eliminates possible exposure errors which may be caused by the slight polarizing of rays in TTL system cameras using fixed mirrors. Most autofocus cameras require a circular polarizer for accurate metering and focusing.
Similar to the ordinary polarizing filter, except rays go circular, not linear, after passing through the circular polarizing filter. It eliminates possible exposure errors which may be caused by the slight polarizing of rays in TTL system cameras using fixed mirrors. Most autofocus cameras require a circular polarizer for accurate metering and focusing.