title: Bitmap.Clone just throws "Out of memory" error. Are there alternatives?
body: <p>I need to convert a Drawing.Bitmap to 4 bit grayscale. Is there any way to accomplish this? I've tried using Bitmap.Clone but I only get the usual infamous "Out of memory" exception. Would this be grayscale even if it managed to convert to 4 bit?</p>
  
  <p>Any tips would be greatly appreciated.</p>
  
  <p>Thanks,</p>
  
  <p>Nelson H</p>