c.exposure_mode = arg('exposure_mode', 'fixedfps')

    c.awb_mode = arg('awb_mode', 'off')

    c.brightness = int(arg('brightness', 50))

    c.exposure_compensation= int(arg('exposure_compensation', 0))

    c.awb_gains = (float(arg('redgain', 1)), float(arg('bluegain', 1)))

    c.ISO = int(arg('iso', 250))

def setupCrop(c, arg):

    c.crop = (float(arg('x', 0)), float(arg('y', 0)),

              float(arg('w', 1)), float(arg('h', 1)))

    rw = rh = int(arg('resize', 100))

    # width 1920, showing w=.3 of image, resize=100 -> scale is 100/.3*1920

        <option>320</option>

        <option>400</option>

        <option>500</option>

        <option>640</option>

        <option>800</option>

      </datalist>

      <div>See <a href="http://picamera.readthedocs.org/en/release-1.4/api.html#picamera.PiCamera.ISO">picamera attribute docs</a></div>

    </fieldset>

    <div>Resulting url: <a class="smallUrl" data-bind="attr: {href: currentUrl}, text: currentUrl"></a></div>

    <div>Resulting crop image:</div>

           awb_mode: ko.observable('auto'),

           brightness: ko.observable(50),

           redgain: ko.observable(1),

           bluegain: ko.observable(1),

           iso: ko.observable(250),

           exposure_compensation: ko.observable(0),

         }

       };

       model.currentUrl = ko.computed(assembleCamUrlWithCrop);

       function getBaseUrl() {

         $.ajax({