frame

UIImage *image = [UIImage imageNamed:@"123.png"];
    CGSize imageSize = image.size;
    CGFloat newWidth = (([[ UIScreen mainScreen ] bounds].size.height) / imageSize.height) * imageSize.width;
    UIImageView *firstFrame = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, newWidth, [[ UIScreen mainScreen ] bounds].size.height)];