Christine,
You have me there ....................... BRILLIANT !!!!!!!!!!!
I doubt that I will ever equal that.
I just looked at Exif : 1/319 sec at f5.6, ISO 100. Was this using the home made ringflash, pop-up, or seperate flash ?
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Leif,
If you are able to reverse a 28mm then forget the tubes and just use that. All you now require is a diffusion panel taped above the lens and you can use the D200 pop-up. It will be good for around f16 at ISO200/400. That would get you something like the Bluebottle, but not a flight shot as I have struggled with that and less magnification.
As you have a 200 macro, I will see what can be done with D100 using the pop-up and my 200 f4 with tubes. I will not be able to get your IQ though.
Do not be too concerned about your Triplus tubes v the Nikon ones. I started out using cut down toilet rolls years ago when I struggled with the cost of film and processing, never mind buying kit.
I might even try reversed 50mm on a tc to see what I get.
Don