Thanks for the comments folks
Mj wrote:That tree frog is a cracker. Not sure that you weren't achieving just as good a result from the sigma though... I'll be interested to see more !!!
Considering the merits of getting a macro myself and so far I think I'm leaning toward the sigma 150... not sure whether the extra working space of the 180 is worth the added expense. Plenty of discussion on macros in here, but I've never really managed to work out if there is a clear winner between these two siggies.
Michael.
I had the opportunity to use Mitedo's Nilkkor 200mm f/4 Micro a couple of years back and immediately fell for the longer focal length. After much research and because I could find an affordable Nikkor at the time I chose teh Sigma 180 as the next best thing and was not disappointed. I have always known though, that as good as the Sigma 180 is, it was not quite up there with the Nikkor. So I have been trolling eBay ever since.
Regarding the 150 v 180 I don't know that there is that much difference in price these days so I think it comes down to either slightly faster 150 or slightly longer albeit slower 180. In my opinion, for insects or anything that could be spooked the longer lens wins.