STEFANvDIEST wrote: the whole point of an external monitor is to give a somewhat correct representation of what you're shooting.
That is a matter of opinion.
An expensive external,
calibrated monitor should be considered a somewhat correct representation.
The on camera monitor should be considered for framing and possible camera control.
If you have zebras, false colour, waveform and other goodies on the monitor ,then consider yourself lucky.
One would be better served to work with a black and white image.
It is better to find focus and for eye strain.
A monitor is a light source, if you think that you are doing yourself a favour by staring into a light source for long periods of time, think again.