Hi Howard,
> As I understand you, the source of the display that is in back of the > digital camera is not from the 5mb pixels, 6mb pixels, 11mb pixels > sensor in which the digital image is taken, but from a separate > interline sensor.
That could be on some cameras, but I'm unaware of any that do it that way. The DSLRs don't have real-time display (on the display on the back that is), because of the issue with the mirror being in the way of the sensor, and because the sensors require the use of a shutter.
> At present, the interline sensor has real time > update problems, and sharpness issues making it difficult or > impossible to manually focus photo's.
Agreed. The image quality of interline sensors is too low, and the update too slow, IMO to use for manual focus.
> As far as having no display when shutter is closed no display, doesn't > the same thing occur with any SLR, when the shutter is depressed, the > mirror swings up out of place the subject can espose either the film > or sensor media. Or are you referring to something else?
If I understand you right, they are not really the same thing...because your optical display works all the time except when the mirror is flipping/flipped up...and a digital display, working only when the shutter is open, and the shutter only opens when the image is being "taken", means the image sensor can't be used for producing a real-time digital display.
This MAY be able to change at some point in time (it, IMO, requires a change in the sensor design, and obviously, in the camera operation as I'll describe), where the shutter can be opened, display info taken from the image sensor, then the shutter closed when the image is to be taken, shutter opened for the exposure time, then closed again while the image is read out...but...this, obviously, adds the lag time of closing the shutter to the exposure equation...but...I think that might be easily done at the same speed as it would take for the mirror to flip up, aperture stop down...so I'm hopeful that may very well work OK. There is also work being done with non-mechanical shutters, that are purely optically based, but they don't get dark enough, and aren't fast enough right now, at least the ones I've used/heard of.
> I am not technical person like you so please explain everything in as > simple terms as possible.
You seem to be doing quite well.
Regards,
Austin