« on: May 08, 2014, 03:55:20 PM »
Sorry if this is a bit off topic, but since we're talking about extenders and extension tubes already I don't see the need to start another thread.
If I use a 2x extender and then a 12mm extension tube...is it possible to use the 100 f/2.8L with this combination?
Yeah, I think I've done that. The 12mm extension tube should make the 2x extender fit any lens (although I'd be careful with ones like the 85L which has a very exposed rear element). With a macro lens like the 100L you'll get a pretty good setup for smaller insect subjects, although I'd stop down and you'll lose infinity focus as always with the extension tubes.
Thanks! I just tried it... Man, unless the camera is on a tripod it's next to impossible to hold it steady. Sharpness really suffers, even when stopped down to f/8.
The lens retained it's f/2.8 aperture, however, which was cool!
Thanks again for the information.