[mst]

[quote name='Frank' timestamp='1300000789' post='6704']

The upcoming Sigma 150/2.8 OS is probably too heavy for travel: it weights 1430g according to some website.[/quote]



Sorry, I wasn't aware the lens is that heavy.



[quote name='Frank' timestamp='1300000789' post='6704']

According to some website the Nikon TC-17E II 1.7x converter supports both AF-s and VR.[/quote]



It does.



[quote name='Frank' timestamp='1300000789' post='6704']

But I have not seen a report on the quality of images produced by Nikkor 105 macro vr + Nikon TC-17E II 1.7x.

[/quote]



I just checked for samples in my lib, but found only one image. So I cannot really comment on the quality of the combination. You can certainly expect a little drop in quality in general, especially wide open. Plus, usually AF speed is reduced by converters, especially longer ones.



Both combined will give you a 180mm/4.8, btw.



-- Markus