Shocking? Really??
I think the only people shocked by reviews like this one are the diehard Nikon gear-heads who live in their self-affirming fantasy-world where Nikon glass is magically superior to anything and everything else on the planet simply by being Nikon glass.
That being said, the dude creeps me out as well... And, like most Youtube reviewers in my opinion, he seems to enjoy the sound of his own voice waaaay too much.
.....
Seriously, I'm sitting at this wonderful outdoor cafe sipping cappuccino with a table full of die hard Nikon fans in this wonderful fantasy realm. No sooner does the parade start when blamo, torrential downpour.
I knew just where to look for the guy that rained on our parade... Lol
Seriously though, I shoot both tamron and nikkor lenses, and I've also shot sigma. A lot varies from lens to lens of course, but in general I find tamron and nikkor both give excellent images with good sharpness and color contrast.
In general I found sigma to lag behind a bit in color contrast, but this is an observation about several of their zoom lenses I've tried. I've never tried any of their primes or their art series so that might be a completely different ball game.
The one thing I will say for the nikkor though, the generally hold their resell value very well
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