Making fine focus adjustments using live view is more precise than doing it with a viewfinder. Large APS-H (26.6 x 17.9 mm) sensor
Large sensor in Sigma Quattro H ensures a good low light image quality compared to smaller sensors, and it also provides higher pixel quality compared to smaller sensors. Very High Resolution Sensor: 45.0MP
Sigma Quattro H's 45.0MP sensor is perfect for landscape photography. It will capture a lot of fine details and let you print them larger. Environmental Sealings
Landscape photographs are taken outdoors and you should be prepared for all kind of weather conditions.