The Dark World

Seriously cool, and while not razor sharp the comp is so unique I don't think it matters.

Impressive macro and detail, Balan. Excellent detail in the colorful eye and head, where it counts.

Balan, this is indeed a special look at this fly including it's prey. I think that some subtle dodging to lighten the robber fly's back might be worth trying.

I had to look up the Rayox filter, to find out that it's a multi-element close-up adapter. Optically these are much better than the single element close-up filters, but not as good as your prime + extension tubes. By the time you add this filter to your lens + extension tube combo, I'm sure you've gone well outside the design limits of the lens, which is why your image is a slightly soft. It's fun to work at such high magnification, but if you want top quality images, you need to get a lens that is designed to give you 1:1 magnification. Then you can add your extension tubes to push the magnification to 1.5:1 or maybe even 2:1. Clearly the "add a new lens" decision is personal, so I'd suggest that you continue to enjoy this filter and see if this much magnification is something that you want to pursue before making the decision to buy a true macro lens. (I went through this process about 20 years ago.)

Many thanks Mark for your kind words, and very useful piece of advise. At the moment I use the 70-200 with extention tubes. I tend to try out lenses and equipment that is brought with those who tag along in the field.
I definitely need to own a 150/180 macro for the kind of subjects I deal with. .. in my plans for 2015

Balan Vinod