Ok, I posted one photo using this technique earlier this week, and thought it was a fluke. Alas it was not. The attached photos are straight from the camera jpegs. (resized for the web...).
No retouching whatsoever.
The blur effect/soft focus is not due to camera shake, or subject movement.
The pics were taken on a sunny, windless day.
I realize that there is nothing new under the sun, and there might be another more conventional way to create these shots, but I have been having a blast with this new (at least to me... ) technique.
I am using a Pentax-M 50mm 1.4. Aperature wide open, attached to a Vivtar 2x Macro focusing teleconverter.
To take a normal macro shot in this setup, you set the converter to 1:1 and the lens focus at infinity. For these shots, the converter is set at 1:1, and the lens is focused at its closest setting. Doing this creates an extremely narrow focus point, as in the first photo. The second photo has the converter backed off a notch to 1:1.1, and the dandelion photo has the converter backed off another notch and set at 1:1.2 macro, giving each photo a slightly larger focal point.
All three photos are taken at 1/2500th of second, f1.4. (effectively 2.8 through the converter...) and ISO 200.
What do you think?

[Stratman]

those look very surreal, i like em !!

[little laker]

Like I said with your last 1 I like it.

I'd like to see what happens if you reversed the lens as well. You should be able to hand hold it on for the first attempt, and if you like it you might be able to buy a lens reverse adapter. They're only a few bucks, but not available for every sized lens.

[hamidlmt]

soft and dreamy! I really enjoy the 2nd one... and, the 3rd is wonderful, my fav out of the batch.