So I just purchased this lens new on Amazon and wasn't sure if this is how all the lens behaved or is it just mine? Need to know if I need to exchange or not. When you zoom all the way out to 12mm, the barrel doesn't sit all the way back, but extends a tad bit. When you start to zoom in to 16mm, the barrel is pulled all the way back where I expect 12mm to have been. As you zoom in more, towards 40mm, it extends as expected. Does that make sense or should I need to make a video? I also have a Canon 24-70mm L lens that I just simulated to see if it had the same behavior and it didn't. Can anybody with the same lens confirm this? Thanks in advance.
thanks 350duser. I also added a video just so anybody else with the same lens can confirm and see what I am talking about. Easier to watch a video than read the text. [video]https://dl.dropboxusercontent.com/u/54897262/2014-11-18%2022.06.50.mov[/video]
I thought so too, but when I pulled out my Canon 24-70mm f/2.8, it didn't exhibit this same behavior. Which is why I posted this thread and video. Just needed confirmation from other 12-40mm owners.
That is normal. The shortest length of my copy is around 17-18mm according to gui. I kinda like it since 17mm gives my favourite field of view
Same here, shortest length is about 14-16mm on mine also. I'm sure there are internal lens elements moving inside that require this length 'wobble' effect.
thanks for the replies guys. I was digging around youtube and found a video of another guys lens and it does the same thing as well starting at around 2:45 secs https://www.youtube.com/watch?v=tcJgzdjoJiM#t=161
In addition to 12-40/2.8 I happen to own Nikon 24-70/2.8 as well. That lens is physically longest when the focal length is 24mm and shortest at 50mm. So the length of the zoom lens does not depend on the focal length.
