Timeline for Why don't today's lenses come with a polarizer by default?
Current License: CC BY-SA 2.5
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| Mar 30, 2011 at 4:36 | comment | added | Imre | Even neater would be TWO of such polarizers so you'd have a built-in variable-ND filter. But there's a complication - adding glass between sensor and lens would slightly change back-focal length, so the camera would either have to adjust distance between lens and sensor, or pop out a replacement clear glass when the polarizer is not needed. | |
| Nov 25, 2010 at 16:59 | history | answered | Itai | CC BY-SA 2.5 |