#photography nerditry:
I make mostly (but not exclusively) B&W images (at least for my fine art work). Is it worth using a dedicated monochrome sensor?
Most digital cameras are designed to record color, using a special mask in front of the sensor called a "Bayer filter". This allows color information to be derived from the raw sensor output, which otherwise would just record brightness. But the Bayer filter can also reduce effective resolution of the image a bit.