Greetings. I have an AF Micro Nikkor 105 mm lens (plus an N70) and from the responses I got from Nikon Digest, I concluded that I cannot use ES-1 for slide copying along with this lens. The options now available to me are - Buy an AIS Micro Nikkor 55mm + pk13 + es-1 (quite expensive when all the three are put together) or go for one of the tube like devices sold by B&H or Adorama for about $100. What I would like to know is qualitative differences (in terms of sharpness, contrast, color reproduction, etc.) between these options. I will be thankful if someone who has tried out both these options can tell me the qualitative differences. My last question is, apart from the two options that I have mentioned, is there any cheap way (other than buying bellows) to use AF Micro Nikkor 105 mm and do slide copying. Thanks in advance and regards. Ashok from India