Andreas, that depends on what are you trying to capture. If ERS distortion is not a problem in your case, and the LED is just to provide more light, not limit the exposure - yes, you can do that (same as if LEDs were always ON for the camera). If on the other hand, you need LED as a "snapshot shutter" than you have to reduce ambient light or increase the LED brightness and simultaneously add neutral filters to the camera lens.
Andrey On Wed, Apr 13, 2011 at 1:32 PM, Andreas Bean <[email protected]> wrote: > Andrey, > > I can't set the exposure time even near 67ms. We have difficult lighting > conditions. For example, we have an indoor room with a bright window > where the cam is moving. > Setting the exposure time to 72ms will give me a blurred image of the > window. Anything else may be sharp due to the fact that it is only > lighted for 5ms. > Is the only option to set the exposure time to 5ms and turn the leds on > for 72ms? > > Andreas > > Andrey Filippov schrieb: > > Sebastian, > > > > Most consumer cameras with ERS have additional mechanical shutter - it > > opens 1/15 sec (if they used the same senor) after the sensor starts > > exposing the first line, readout starts after the shutter closes. When > > using the bright LED it the LED on state is virtually the same as > > mechanical shutter open > > > > Andrey > > > > ERS (Electronic Rolling Shutter) has been used in all consumer as > well > > as professional CMOS based camera systems to date. > > > > > > > _______________________________________________ > Support-list mailing list > [email protected] > http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com > >
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