title: How to reproduce tifffile.imsave with tifffile.TiffWriter
body: <p>I have python code doing in principle:</p>
  <pre><code>import tifffile
  data = np.empty((l, m, n), dtype=np.float32)
  tifffile.imsave(file_name, data, imagej=True)
  </code></pre>
  <p>which produces a tiff-file in a format that works further down the line. However this can be quite memory intensive. Therefore I want to write something like:</p>
  <pre><code>writer = tifffile.TiffWriter(file_name, imagej=True)
  for page in data:
      writer.write(page)
  </code></pre>
  <p>This produces a tiff-file too, but the format is different than in the example above.</p>
  <p>I believe <code>tifffile.imsave</code> is just a wrapper for <code>tifffile.TiffWriter.write</code>. What options do I need to use to reproduce the same result with <code>TiffWriter</code> that I get with <code>imsave</code></p>