<b>SPECIFICATIONS:</b><br> Full Frame: Yes<br> Compatible camera mount: Leica M Mount<br> Focal Length: 50mm<br> Aperture Range: f/1.1-f16<br> Angular Field: 46 Degree<br> Closest Focus Distance: 0.7m<br> Blades Number: 12 Diaphragm Blades<br> Construction: 7 Elements in 6 Groups<br>