TBH, if youve got the time and impetus to sit down and draw up that comparision with the Nuremberg War Trails, then I can only suggest that you are not of a sound mind.
Not really a tele-zoom eh?
I had one of those for about 14 months now, love it and use it a lot. I would say take your camera to the shop with you and try the actual lens you are buying as Sigma can be a bit hit and miss with the focus on their ultra wide lenses.
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