Chuasam, The LAOWA is beyond his budget. When he gets back, financially, the Sigma 105 is often a third off, making it only $200 more than the Laowa. N-PHOTO magazine (UK) which I respect, rated it the best. I have been extremely happy with this and my other sig lenses.
[Sigma improved a ton recently. not all are as good as the ones I bought (listed in my signature). optically, these are outstanding. some others have focus issues, like back focusing. mine focus extremely quickly, but with close up shooting, manual focus is often best regardless of the lens. in other words, the sigma micro can search for a while.]
I have an old B&W one lens close-up attachment from my film days that I used on a 20-35 zoom. It's pretty good, but will cause sharpness to be reduced on the sig. I will let you know how it works after I buy a ring size adapter.
I plan to get extension tubes to get closer with both of my micro lenses.
Consider buying an older micro lens like my 60mm that i used in a housing underwater for years and still use, but the siggie blows it away (click on pic to zoom in):
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Butterly House
Here are some recent shots with the sig micro:
Hibiscus in need of a proboscis
Tiny Pansy
popup flash in command mode -.7, Nikon 910 hand held -.3
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The close up lens was strange when I used it on a 200mm lens to get crazy close:
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Also, you will need at least one, better two flashes as you stop down to f16 or more to get decent DOF.
REMEMBER, DOF decreases when you:
1. increase lens focal length
2. decrease lens to subject distance
3. open up the aperture
Danny, good luck with your job search!