// these values can be changed
string $cameraAName = "persp1";
string $cameraBName = "persp2";

string $lightAName = "pointLight1";
string $lightBName = "pointLight2";

string $filename = "render";

// don't change anything below this line
string $directory = (`workspace -q -rd` + "images/");

string $renderPanel;
string $renderPanels[] = `getPanel -scriptType "renderWindowPanel"`;

if(size($renderPanels)) 
    $renderPanel = $renderPanels[0];
else
{
    $renderPanel = `scriptedPanel -type "renderWindowPanel" -unParent renderView`;

    scriptedPanel -e -label "Render View" $renderPanel;
}

// render camera A
setAttr ($lightAName + ".visibility") 1;
setAttr ($lightBName + ".visibility") 0;

render  -x `getAttr defaultResolution.width` -y `getAttr defaultResolution.height` $cameraAName;

string $concatFilename = $directory + ($filename + "A");

catch(eval(renderWindowSaveImageCallback ($renderPanel, $concatFilename, `getAttr defaultRenderGlobals.imageFormat`)));

// render camera B
setAttr ($lightAName + ".visibility") 0;
setAttr ($lightBName + ".visibility") 1;

render  -x `getAttr defaultResolution.width` -y `getAttr defaultResolution.height` $cameraBName;

$concatFilename = $directory + ($filename + "B");

catch(eval(renderWindowSaveImageCallback ($renderPanel, $concatFilename, `getAttr defaultRenderGlobals.imageFormat`)));