Abstract: A measuring camera has a camera housing fixed to a rigid frame providing a reference surface against which an objective lens unit is held so that for a plurality of such units, all can have their respective projection centrums located at a fixed position within the housing. The frame has guides on which a sensor, e.g. of the CCD type, is mounted for movement parallel to the optical axis without play.

Abstract: The correlated positions of two axially shiftable components of a varifocal objective, i.e., a variator and a compensator, throughout a zoom range are stored in a memory from which they can be read out to control respective drives during a zooming operation. The readout rate is determined by a speed selector which sets a frequency for the pulsing of a control unit that scans successive memory addresses. The memory may also contain data for focusing control, either through axial adjustment of a front component of the objective or through modification of the positional correlation of the two shiftable components, as well as for an adjustment of a diaphragm with changes in the overall focal length.

Abstract: Pharmaceutical compositions containing as an active ingredient a compound of the formula ##STR1## wherein R.sub.1 is alkyl of 1 to 5 carbon atoms,R.sub.2 is hydrogen or lower alkyl,R.sub.3 is hydrogen or hydroxyl, andZ is alkylene of 2 to 6 carbon atoms,Or a non-toxic, pharmacologically acceptable acid addition salt thereof; and a method of using the same as sympathomimetics.

Abstract: Compounds of the formula ##SPC1##WhereinR.sub.1 is alkyl of 1 to 5 carbon atoms,R.sub.2 is hydrogen or lower alkyl,R.sub.3 is hydrogen or hydroxyl, andZ is alkylene of 2 to 6 carbon atoms,And non-toxic, pharmacologically acceptable acid addition salts thereof; the compounds as well as the salts are useful as sympathomimetics.