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In the old days we had lens apertures that were activated by mechanical levers at the point of exposure although they were fully open during focussing and exposure calculations.
With a mirrorless camera do you have to stop down to the taking aperture before focussing and if so does that dim the viewfinder making manual focussing difficult or does the viewfinder compensate so you can see to focus. If it's the latter how do you know if the exposure will be correct?
With a mirrorless camera do you have to stop down to the taking aperture before focussing and if so does that dim the viewfinder making manual focussing difficult or does the viewfinder compensate so you can see to focus. If it's the latter how do you know if the exposure will be correct?