Fuji X-Pro2 with 18-135 lens, OVP usability

There is a huge impact and makes the OVF mode rather hard to use. Luckily, the EVF mode is really fantastic.

The lens barrel will be visible on the lower right of the OVF and crops a significant portion which gets bigger as you zoom in. The X-Pro2 in turn will shrink the bright lines to indicate the coverage of the focal-length but it very quickly becomes too small to properly frame your subject.