You mean the demo version? I check the site, it said the demo version only support for 8 bit jpeg?
i didnt know jpg got more than 8bit.
105 VR have focus breathing, so might need to get use to that. For true serious macro, it might be annoying. But for general macro, should be ok. Besides, the lens is good for Portraits as well and focusing speed is acceptably fast when set to limit, still able accurately follow the subject which is moving.
In comparison with SP90, the 105VR triumphs over it in MANY ways, it maybe pricier, but there's big difference is terms of features and what it offers. Firstly, the focusing speed and accuracy easily be one of the reason, second the Internal Focusing while the SP90 extends like crazy.... plus Silent Focus on the Nikkor.
More... there's VR on the Nikkor, excellent built quality, Nano Coating,... and is it weather sealed?
In comparison, it's just very much differences in terms of specs, features and performance alone and the price isn't much far apart if you take those into considerations, unlike comparison with other 3rd party lens, where there's little difference in terms of specs or features mainly, but a HUGE gap in terms of Price.
thats why i said wait for the NEW SP90.
it doesnt extend and its got updated optics.