Mohammad AlLawati wrote:
kymarto wrote:
Actually IMO the must-have UWA is the Sigma 8-16. Beats the Nikons for sharpness, and that at max aperture. And 8mm is considerably wider than 10mm and very much wider than 12mm. Check Photozone for more info.
Yeah I saw photos at f11 where the Sigma 8mm beats the tokina in sharpness... They stated the photo was from the sigma... and I saw it to be sharper.
I have both the Nikon 12 - 24mm, f4 and the Sigma 8 - 16mm, as well as other wide angle DX lenses.
I purchased the 12 - 24 second hand, over seven years ago, and first used it on my F80 film camera where it works well without problems from 18mm on.
In late 2006 I purchased a D200, which I still use, - until the D400 arrives!
The 12 - 24mm is an excellent lens, still highly regarded by experts like Thom Hogan. See: http://www.bythom.com/rationallenses.htm
His article was last updated 2/12/2012, so it's fairly current. In that article he has a section on the best lenses at various focal lengths. At 12 and 14 mm the 12 - 24mm is highly regarded by him on DX bodies. At 12mm he regards the 12 - 24 Nikon this way:
12mm – Again, the lack of choice pretty much gives you the 12-24mm f/4G DX lens. On the APS-sized sensors there’s a hint of softness and chromatic aberration wide open, and depth of field is very difficult to get right (the lens is only marked at five distances). In general, I’m mostly happy with the 12-24mm at 12mm on my bodies, but there’s room for a better lens here (please, Nikon, a 12mm f/2.8 fixed!). The Nikkor 10-24mm is nearly the same optically as the 12-24mm, but the build quality is lower and it's variable aperture. In my samples, I'd still have to rank the 12-24mm over the 10-24mm, but only slightly. Sigma does have a 12-24mm lens that covers the full frame that you might want to try out (I haven’t) if you need this focal length for an FX body. Note: while I haven't reviewed the Tamron and Tokina options that cover this range and this list isn't about third-party lenses, the Sigma, Tamron, and Tokina options are all viable at this focal length. None are perfect. The Nikkor 12-24mm has one thing going for it the others don't, though: it can go DX or FX. That's right, it makes a perfectly fine 18-24mm lens.
The need to go wider than 12mm for architectrual wide angle shots in limited spaces saw my next wide angle lens purchase being the Nikon 10.5 mm, f2.8 fisheye.
When the Sigma 8 - 16 mm became available a few years ago, I purchased it shortly after its release, as de-fishing the fisheye for ultra wide angle shots was not an ideal solution for me.
Each of the three lenses, along with a Nikon 17 - 55mm f2.8, are still in my bag, and each has its own purpose. All are regularly used.
The Nikon lenses are more consistent and far faster when focusing. Their miss rate for out of focus shots is quite minimal.
The Sigma by comparison is a lot slower when focusing and it is relatively easy to get out of focus shots when shooting quickly and back to back with the Nikon lenses in the same situation.
The build quality and construction of the Nikon lenses is also superior.
In short, there are horses for courses, and lenses suitable to suit your needs and particular requirements. Your shooting will determine what those needs are. Good luck with your research.