public function getZoomPictureUrl($iIndex = '')
    {
        $iIndex = (int) $iIndex;
        if ($iIndex > 0 && !$this->_isFieldEmpty("oxarticles__oxpic" . $iIndex)) {
            $sImgName = basename($this->{"oxarticles__oxpic" . $iIndex}->value);
            $sSize = \OxidEsales\Eshop\Core\Registry::getConfig()->getConfigParam("sZoomImageSize");

            return \OxidEsales\Eshop\Core\Registry::getPictureHandler()->getProductPicUrl(
                "product/{$iIndex}/",
                $sImgName,
                $sSize,
                'oxpic' . $iIndex
            );
        }
    }