Explicitedly adding exifdata adds a frame

using (var reader = ImageReader.Create(TiffResource))
using (var writer = new TiffWriter(result))
{
    Console.Out.WriteLine("Starting with {0} Frames.", reader.Frames.Count); // 1 Frame

    var settings = new TiffSettings(CompressionType.Lzw)
                        {
                            Exif = reader.Exif // this is the culprit
                        };
    writer.Setup(settings);

    (reader + writer).Run();
}

using (var resultReader = ImageReader.Create(result))
{
    Console.Out.WriteLine("Now there are {0} Frames.", resultReader.Frames.Count); // 2 Frames
}