For Brillentraeger unsuitable parts of the field of view remains dark when the distance through the lens is caused bigger, no diopter correction. The list price of 600 Eur is covered (2 grams viewfinder cost as much as 1 gram of gold!). The Eur 480, which requires Amazon, are the equivalent to much. I send it back and keep the electronic viewfinder that this also is really excellent and even cheaper.