Nikon D610: fix whitelevels. Fixes #11150
Nikon D610: fix whitelevels. Fixes #11150

According to usermanual the camera has no uncompressed raw.

darktable-org/rawspeed,darktable-org/rawspeed,darktable-org/rawspeed,LebedevRI/rawspeed,darktable-org/rawspeed,LebedevRI/rawspeed,anarsoul/rawspeed,darktable-org/rawspeed,klauspost/rawspeed,LebedevRI/rawspeed,LebedevRI/rawspeed,LebedevRI/rawspeed,klauspost/rawspeed,anarsoul/rawspeed,anarsoul/rawspeed