Shutter speed Olympus 45 1.8 vs Panasonic 20 1.7 on EM5

webservants wrote:

Targeting the same subject indoors with both the Olympus 45 1.8 @ 1.8 and Panasonic 20 1.7 @ 1.7 I found that the shutter speed of the Oly was 1/100 while the Panny was 1/60. Can someone please explain this to me. It seems like the 1.7 lens would have a faster shutter speed in this case.

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blessings, Steven