The type of adapter is important when using vintage or LTM lenses. There are three types of LTM to M adapters. The ones that are type 1 will not work with live view or the Visoflex EVF adapters you may see "snow". The type 2 and 3 adapters will work. For best reliability type 3 adapters that can be 6 bit coded are best, like brass Rayqual adapters. Voightlander makes type 2 adapters. Also note that the old or vintage leica adapters are type 1 adapters and may not work with modern digital rangefinder leica EVFs.