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RF 28-70 F2 stock uk

Started 4 weeks ago | Discussions thread
Ephemeris
OP Ephemeris Senior Member • Posts: 1,186
Re: RF 28-70 F2 stock uk

https://www.dxomark.com/canon-rf-28-70mm-f2-0-l-usm-lens-review/

Light transmission is a particularly important aspect of the optical performance of a lens that’s also touted for video

What is the specific reason we would be concerned over the Tx during video applications rather than stills? Is this becuase of changing focal length and the brightness is required to stay constant?

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