Manual Exposure Mode A correct exposure of a landscape shot is very important. Even though modern digital cameras features advanced algorithms to calculate the right exposure, they still may fail some difficult conditions. Manual exposure mode in these conditions helps a lot in order to achieve correct exposure.
RAW shooting capability RAW files contains much more color information compared to JPEGs, and gives you more room for post processing without significant quality loss. They provide wider dynamic range and option to recover shadow and highlight clipping to some degree.
Large APS-C (23.5 x 15.7 mm) sensor Large sensor in Sigma DP2 Quattro 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: 20.0MP Sigma DP2 Quattro's 20.0MP sensor is perfect for landscape photography. It will capture a lot of fine details and let you print them larger.
No Manual Focus Mode Manual focus in landscape photography is very useful in order to have a sharp image and minimize the areas that are out of focus. Autofocus may not consistently give you the best results.
45 mm - Poor Wide Angle Coverage Even though there are very good examples of landscapes photos taken with tele lenses, most of the landscape photos are taken with wide angle lenses. Unfortunately, with the widest focal length of 45mm, Sigma DP2 Quattro doesn't provide a real wide angle coverage.
No Environmental Sealings Landscape photographs are taken outdoors and you should be prepared for all kind of weather conditions.