 Richard S. Clemens |
Technical Question I have a Canon 75-300 4-5.6 IS Lens. I plan on purchasing a Canon 70-200 L 2.8 IS lens. Question: If I set my 75-300 4-5.6 on F8 and I set the 70-200 2.8 also on F8, would more light be admitted on the 70-200 2.8 lens than the 75-300 4-5.6 lens? Is the AV unique to each lens or do all AV emmit the identical amount of light if set on the identical F number?
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