E.L.. Shapiro Loc: Ottawa, Ontario Canada

As per distortion; Many modern wide-angle lenses and high-quality zoom do not have excessive edge distortion or fall0ff. Barrel distortion and curvature of field are minimized man many modern optical formulas. Nonetheless, distortion such as foreshortening and keystoning can be introduced by shoot downward, upward or an extreme sideways angle. These distortions become more noticeable when shooting architecture, people, and any scenic contain liner at subjects.

Theses distortion cause the visual perception in photography that buildings are falling over forward to backward or objects or person are larger or wider at the top or bottom that the actually are. To avoid this. with lenses that are not equipped with a tilt/shift mechanism, is to keep the camera parallel to the subjects- no tilting it upwards or downward and the crop excessive ground or sky in post-processing. In scenes without linear objects, these distortions may not be as apparent.

If you want to research these issues any further, look up "rectilinear" optical issues, vanishing points in perspective, and keystoning.

When it comes to rural or mountainous scenery, I am not usually worried about theses issues in that I am not photographig a brick wall or tall buildings, I will opt for the visual perception of depth as a compromise to rectilinear distortion.

AMD Loc: Houston,TX

Thank you for your helpful advices.I was thinking about the 14-24mm , but it's heavy and I can't use the polarizer.I might opt the 16-35 f4 even it's not better than the 14-24mm, but the range is more flexible.

AMD Loc: Houston,TX

Thank you.
I agree with you on the choice of the 16-35mm even its aperture is not optimal .

ejpeters Loc: New Jersey, USA

I use the Nikon 20mm. I've traveled with the Nikon 28-300mm and the Nikon 20mm and I was very satisfied with the results.

AMD Loc: Houston,TX

Is this lens better than the 24mm? Does it have a lot of distortion ? Thank you for your suggestion.

Thomas902 Loc: Washington DC

First my humble apologies... I wrongly assumed you were referring to the AF-S 24-70mm f/2.8 which is an intregal part of Nikon's "Trilogy". However it is primarily designed for event shooters (think Wedding here) where the big money is... Nikon knows Wedding Shooters will pony up for a pricey optic that does very well wide open at f/2.8 in the center of the field where it really matters...

Albeit this lens is not tack sharp across it's entire field of view at 24mm...
For anyone shooting landscapes in prime is likely a far better choice.
I don't shoot landscapes (no revenue stream associated with this genre) however I do shoot Building Elevations since there is considerable paid work in Architectural in my market here in DC... Use only primes here.

Thanks so much for the clarification Winslowe...
All the best on your photographic journey

Toment Loc: FL, IL

Sony 10-18 for a6000
Don’t know about nikon