• Nikon presents a great catalog!
• DX Lenses are very important for pro shots!
• Read the Article and visit www.dxlens.net

DX Lens
Nikon digital SLR cameras all use a sensor that is smaller than 35mm film, but the cameras themselves accept standard 35mm format lenses. The decision by Nikon to use a “cropped” sensor in its digital cameras can be debated ad nauseum as to its merits; depending on their subject, photographers either loved or hated the smaller sensor format.DX Lens
The APS-C sensor in Nikon digital SLRs has a “crop factor” of 1.5X. Wildlife shooters immediately liked the idea of their 200mm lens having the same angle of view as a 300mm lens. .
Nikon showed their commitment to digital SLR users in February 2003 when they introduced the 12-24mm f/4.0G DX AF-S Nikkor. .
Each of these lenses are priced substantially less than the Nikkor 12-24 DX, and appear to offer attractive options for super-wide zooms. We at Nikonians, of course wanted to know how the three challengers stacked up compared to the “venerable” Nikkor.
We also appreciate Roberts Distributors, who went out of their way and arranged for us to get the lenses on very short notice.

THE SIGMA 12-24mm LENS
If that’s important to you, the Sigma 12-24mm is the clear choice. .

THE TESTS
We tested these lenses in real-world conditions; anyone who wants to dwell on MTF charts can look them up from the manufacturer’s own websites. .
To level the playing field between cameras, we shot our test images in JPEG mode with sharpening set to medium-high in the camera. .
We shot a series of images with each lens at a range of f-stops; from wide-open to f/22. We repeated the image series at each focal length for each lens. .
So here, alphabetically, are our individual reviews of each of these super-wide lenses, followed by our summary and conclusions..
Many early adopters of digital flocked to their local camera shops to purchase the large (and rather expensive) 14mm Nikkor lens. At least then they had an effective focal length of 21mm; wide enough for some, but not truly “super wide” on a DX format body.
Nikon showed their commitment to digital SLR users in February 2003 when they introduced the 12-24mm f/4.0G DX AF-S Nikkor. .
However, 2005 saw new lenses introduced with super-wide focal lengths in the Nikon F-mount from each of the three major third-party lens manufacturers. .
We also appreciate Roberts Distributors, who went out of their way and arranged for us to get the lenses on very short notice.

THE SIGMA 12-24mm LENS
If you’re looking for a DX format super-wide lens that will let you easily use filters (the primary drawback of the Sigma), one of the four in this review is currently the only choice.

THE TESTS
We tested these lenses in real-world conditions; anyone who wants to dwell on MTF charts can look them up from the manufacturer’s own websites. .
We also shot some images in RAW to evaluate post-processing techniques for removing vignetting and chromatic aberration. .
We shot a series of images with each lens at a range of f-stops; from wide-open to f/22. We repeated the image series at each focal length for each lens. .
So here, alphabetically, are our individual reviews of each of these super-wide lenses, followed by our summary and conclusions.. To here more click on this >>>>DX Lens