[Sylvain]

On a related note: Fuji claims the new X-T1 has a finder lag of only 5ms. That advertisement suggests to me that there were issues in the past. Looking into BC's contribution, they don't specify the brightness level that 5ms is valid for.

 

Interestingly, the new cheaper OM-D is also said to have visibly reduced EVF lag (pekkapotka). So it seems this is a field of progress lately, This table http://photographylife.com/fuji-x-t1-vs-...-om-d-e-m1 says the T1 has 5ms vs 29ms for the E-M1. About right where I guessed.

 

The rear E-P1 lcd was indeed rather behind, or perhaps was it more visible because of the length arm viewing : you see the real scene anyway.

 

That T1 sure sounds like a speed demon.