Comparing sharpness of 16-80 to other lenses

Started 8 months ago | Discussions thread
CAcreeks Forum Pro • Posts: 14,359
Re: Using the 16-80 for video zoom

DocetLector wrote:

Why does the exposure change during zooming, it`s a constant f4 lens ?

I don't know for sure, but I have noticed that wide-angle requires less light (EV value) than telephoto shots in similar conditions. Hypothesis: lens gathers more light from the sides.

If that hypothesis is true, one would think video could be fixed with a firmware update.

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