Mirrorless cannot pre-calculate final image with bounce flash?

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peterharvey Contributing Member • Posts: 930
Mirrorless cannot pre-calculate final image with bounce flash?

One of the major benefits of mirrorless EVF cameras is that it can pre-calculate the final image as we adjust the aperture, exposure time and ISO sensitivity. Therefore, as I dial up the exposure time, the image in the EVF will get brighter etc.

However, is it true that mirrorless EVF cannot pre-calculate to show the final EVF image for flash and bounce-flash photography, especially bounce flash photography, because the ceilings and hence light output are so variable, that the flash must fire to measure the light falling on the subject?

Hence, for low light indoor bounce-flash photography, mirrorless EVF is not a huge advantage compared to traditional aging dSLR's?

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