BackdoorArts
Senior Member
No doubt that the Nikon is a great lens, and you have plenty of recommendations for that, so I'll just add that the Sigma 105mm is no slouch either, and does not change in length while focusing as you seem to suggest in your initial post. As Rick suggests, it may be a little more reach than you'd typically want on a macro lens on a DX camera, but the IQ is phenomenal and easily on par with the Nikon. You save a couple bucks as well. If it has a negative it's that the VR/OS is a little noisy, which is a consistent thing with Sigmas, but it works great. If you need proof follow the Flickr link below and hunt down the macro shots.