Well if you check the eyepiece it is removable dunno if this makes any sense with a mirrorless camera.
On Canon SLR cameras the eyepiece is removable there's a small rubber rectangle attached to the strap which, if you take off the eye cup, slides right over the viewfinder to block extraneous light from coming in, this is very important for long exposure.
On mirrorless you don't need it and thus you don't need a removable eyepiece
I have lost several times the eyepiece and I wouldn't be happy to have an eyepiece that is prone to fall
![[Image: tecbas_cap.jpg]](http://www.timelapses.es/blog/wp-content/uploads/2009/06/tecbas_cap.jpg)
On Canon SLR cameras the eyepiece is removable there's a small rubber rectangle attached to the strap which, if you take off the eye cup, slides right over the viewfinder to block extraneous light from coming in, this is very important for long exposure.
On mirrorless you don't need it and thus you don't need a removable eyepiece
I have lost several times the eyepiece and I wouldn't be happy to have an eyepiece that is prone to fall