400mm f/2.8 L IS USM or 300 f/2.8 L IS USM?

[WAFKT]

Any tips on getting through unnoticed?
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Have bigger boobs than gear... (sorry, but that seems to work for my wife).

[Jon Ruyle]

Any tips on getting through unnoticed?
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Have bigger boobs than gear... (sorry, but that seems to work for my wife).

Uh, wait. And she's getting a 400mm f/2.8?

[WAFKT]

Uh, wait. And she's getting a 400mm f/2.8?
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Ha! I see your point... I hope I don't have to but a new pair of those too...