Hello out there in Nikon Rumors Forum.
I am using a D7100 (before a D5100) A big jump up in quality camera.
I am looking for a new wide angle lens. I don't want to spend money on a Nikon wide angle lens.
I saw there is Tokina, Tamron and Sigma.
I don't what to choice, would like to hear some advice here.
Best regards.
Comments
DX Format: Unless you plan to go full frame in the future these options are cheaper
The cheapest wide angle DX format lens is the Nikon AF-P 10-20mm. The Tamron 10-24mm VC, and Tokina 10-17mm fish-eye, Tokina 11-20mm are about the same price as each other. On the high price side is the Sigma 18-35mm F1.8, but that's not a super wide angle, if that is what you are looking for.
Some variance in performance, since some of these lenses have old optical designs. The newest of the bunch in the Nikon AF-P.
Full Frame: If you plan on going full frame in the future, spend the extra cash for a FF lens now
Tokina 16-28mm F2 Pro FX
Tamron 15-30mm F2.8 VC
Sigma 12-24mm F2.8 DC (basically in the same price range as the Nikon 14-24mm)
Performance of most of these lenses are very close. It comes down to what lens is going to cover the focal range you want.
Remember if you get FX glass to multiply the focal length by 1.5 to get the DX equivalent. The FX glass is not as wide on a DX as it is on a FX camera which is why I went with DX glass on the wide end. The widest FX I have is a 24-70 so when I do get a FX body I may get a wider FX lens if I think I need wider than 24.
https://photographylife.com/reviews/nikon-10-20mm-dx-vr-af-p
Since you have a D7100, read the section on compatibility carefully.
A 12 mm DX lens results in the same image as a 12 mm FX lens, it's just smaller and cheaper, most likely.
(With a D7100, all lenses should be multiplied by 1.5.)
Sigma 70-200/2.8, 105/2.8
Nikon 50/1.4G, 18-200, 80-400G
1 10-30, 30-110
If you put a DX lens on a FX camera it will not fill the full image area of the FX sensor as the image circle is too small.
Therefore using a FX lens on a DX camera the 1.5 multiplying factor is needed to determine what is captured on the smaller DX sensor.
I no longer have any DX lenses, but when I did, my 18-55 at 50mm on my D7200 gave exactly the same image in the VF as my 50mm FX lens mounted on the D7200. Which is to say both VF images appeared as a 75mm lens would appear through my D610.
It's the SENSOR (not the lens) that "demands" the multiplication.
Sigma 70-200/2.8, 105/2.8
Nikon 50/1.4G, 18-200, 80-400G
1 10-30, 30-110
If we pretend the "full frame" D850 and the "cropped frame" D500 had exactly the same pixel density (the real densities of the two cameras are very close), a picture from the D850 which you then crop down to equal the D500's 20 or so mega-pixels (2/3 by 2/3 of the full frame size) would be virtually identical to a photo taken on the D500 with the same lens.
Incidentally, you shouldn't use an ultra-wide angle lens to 'get more in' as you say above - far better to stitch a pano using a longer lens because you are getting severe edge distortion on the ultra-wide image which you don't get with a stitched pano using a longer lens, plus you are often cropping off the unwanted sky and foreground to end up with a letterbox crop. Ultra-wide lenses are used for their particular perspective look.
That said, this is a useful thread for those of us looking for the best UW lens. I had a Tokina 11-16 f2.8 myself - it was a very good lens for normal photography, although the aberrations were pretty poor when there were stars in the shot.