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Yu-Lin Chan | all galleries >> Test Images >> 80-200 F2.8L versus 28-70 F2.8L > F4.5
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80-200 on the left, 28-70 on the right.

Why F4.5 and not F4? I shot the 28-70 test images in 2.8, 3.5, and f4.5 steps. So I don't have one at F4.0.

Not sure why the 80-200 would expose the shots slightly dimmer than the 28-70, but in any case, the 80-200 is more contrasty and sharper from F4.5 on. Check the next image shot at F5.6.

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