The view menu

The view menu of Hemisfer shows the following elements, which have the same effect as some of the buttons of the button bar:

button colours Colours: view the picture with all its colours.
button gray Grey: view the picture in grey tones. Only the colour channels selected in the colour options are used to produce the brightness of the grey tones.
button black and white Black and white: view the picture in black and white. Each pixel is classified to either black or white according to the threshold. If necessary, this threshold is first automatically calculated. Note that the picture displayed does not show the true ratio of black and white if the zoom factor is less than 1. With a zoom of 1/2, for example, 4 pixels give a single one. Single white pixels in black surroundings are then in most cases outnumbered by 3 black pixels and tend to disappear completely. The same is true for single black pixels within white surroundings, but this happens less often on hemispherical photographs.
button rings and sectors Rings and sectors: view the analysis rings and sectors on the picture.
button sun tracks Sun tracks: view the sun tracks on the picture. This will display one track (one day) per month as well as the position of the sun for each full hour in form of an 8-shaped analemma (or a straight line in case the true solar time has been chosen in the light regime options). A correct display of the sun tracks obviously requires that the coordinates of the site are entered.
button first file First file: load the first file if several were chosen together for loading (either pictures or parameter files).
button previous file Previous file: load the previous file if several were chosen together for loading (either pictures or parameter files).
button next file Next file: load the next file if several were chosen together for loading (either pictures or parameter files).
button last file Last file: load the last file if several were chosen together for loading (either pictures or parameter files).
button zoom out Zoom -: zoom out the picture (minimum 1/8 x). The initial zoom factor is set according to the size of the picture relatively to the display area of Hemisfer's main window.
button zoom in Zoom +: zoom in the picture (maximum 8 x). The initial zoom factor is set according to the size of the picture relatively to the display area of Hemisfer's main window.
button keep zoom Keep zoom and position: Switching between pictures normally resets the zoom so that the entire image is visible. With this option set, however, the zoom factor and the position of the displayed area are kept. This is especially useful for examining some details e. g. within a series of exposure bracketing.
button colour frequecies Colour frequencies: display the frequencies of brightnesses in the three colour channels (red, green and blue), as well as in their twofold combinations (cyan, yellow and magenta) and in total (white).