Originally posted by: Eltano1
I have a D40x, with the 2 kit lenses, plus a Sigma 70-300 Macro, Nikon 50 1.8, Nikon 35-70, plus an inverter.
Ordered extended tubes, but now I will like to know how do I put them together to start practicing Macro photography.
Any help is really appreciate.
Regards
Eltano
It's going to be difficult to use extension tubes with your Sigma because the Sigma does not have an aperture ring.
Unless you purchased expensive auto extension tubes ($100+) that couple the metering and aperture mechanisms to the camera, you'll have to focus and shoot completely manually, using stop down metering and manual (M) exposure mode.
As a result, it might be easier if you put a full set of tubes on the 50mm f/1.8 instead of on your Sigma, since the 50mm has an aperture ring. The Sigma does do 1:2 macro without any tubes, which is pretty good and will let you get started with macro. However, because the Sigma is a cheap telephoto zoom to begin with and does not have a floating focusing system, image quality will suffer greatly at 300mm, which is what you need to achieve 1:2 magnification.
Either way, be sure to get a tripod because using manual extension tubes without one is extremely difficult, and most of your shots will come out blurry.