Abstract: Device for optically determining at least one property of a sample (2) positioned in or on a sample carrier (1) which can be moved relatively to the device, wherein the device is adapted to optically determine in a first step at least one property of a first sample (2) and at least one property of a second sample (2) without relative movement between the device and the sample carrier (1), wherein the sample carrier (1) is adapted to be moved so that in a second step a property of the second sample (2) can be optically determined, wherein the device is adapted to be tuned, depending on the information obtained with regard to the property of the second sample (2) determined in the first step, to optically determine the property of the second sample (2) in the second step, wherein a property of a third sample (2), not optically determined in the first step, is optically determined without relative movement between the device and the sample carrier (1) in the second step such that the device is adapted to be tune