Quote Originally Posted by noparking View Post
Picked up an 18% gray card yesterday and performed your test with direct sunlight ~7:15 a.m. and got these results:

E-P1 = 1/60 sec @f/16 (does not provide 1/3 stop detail)
SBC reflective = 1/60 sec @f/16 +2/3
SBC incident = 1/60 sec @f/16 +1/3
For the record, the test above was done with the camera in aperture priority mode (f/16) and a Tiffen 40.5mm uv filter attached. I just re-did the test without the uv filter

E-P1 Auto exposure mode
-----------------------------
E-P1 = 1/320 sec @f/10
SBC-R ~ 1/320 sec @f/8
SBC-I ~ 1/320 sec @f/9

E-P1 Aperture priority mode
-------------------------------
E-P1 = 1/125 sec @f/16
SBC-R = 1/125 sec @f/16 +1/3
SBC-I = 1/125 sec @f/16 +1/3 (this time reflective and incident readings matched - I have no explanation why)