    int MrwImage::pixelWidth() const
    {
        ExifData::const_iterator imageWidth = exifData_.findKey(Exiv2::ExifKey("Exif.Image.ImageWidth"));
        if (imageWidth != exifData_.end() && imageWidth->count() > 0) {
            return imageWidth->toLong();
        }
        return 0;
    }
Unknown