tnguyen600
Well-Known Member
"The problem is caused by the strong reflection from the mirror-finished sensor (and its filter pack). Film was not so reflective. Light bounces off the sensor, strikes the rear element, and reflects directly back to the sensor--maintaining the image of the light source.
Multicoating the rear element allows the reflected light to continue back through the front of the lens." (RDKirk, POTN)
"The dynamic range of that scene exceeds the capabilities of the sensor. Only way to do it is to set your ambient exposure (ISO/f-stop/shutter speed) to properly expose the window. Just doing that will obviously make the room quite dark, so that's when you add flash. E-TTL is generally smart enough to output just enough flash power to light the room (especially if you bounce a hotshoe flash off the ceiling). So the flash lights the room, and the "regular" exposure exposes the window. Flash pictures are really two separate exposures. Ambient is determined by ISO/shutter speed/f-stop, and the flash exposure is determined by ISO/f-stop/flash power." (egordon99, POTN)
Multicoating the rear element allows the reflected light to continue back through the front of the lens." (RDKirk, POTN)
"The dynamic range of that scene exceeds the capabilities of the sensor. Only way to do it is to set your ambient exposure (ISO/f-stop/shutter speed) to properly expose the window. Just doing that will obviously make the room quite dark, so that's when you add flash. E-TTL is generally smart enough to output just enough flash power to light the room (especially if you bounce a hotshoe flash off the ceiling). So the flash lights the room, and the "regular" exposure exposes the window. Flash pictures are really two separate exposures. Ambient is determined by ISO/shutter speed/f-stop, and the flash exposure is determined by ISO/f-stop/flash power." (egordon99, POTN)