Learn More About Nikon Lens
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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
While the gains in apparent focal length on telephoto lenses were praised by nature shooters, the downside of this “crop factor” was that now your 17-35mm lens lost its “super-wide” ability and became a pedestrian 26-52mm lens. Many early adopters of digital flocked to their local camera shops to purchase the large (and rather expensive) 14mm Nikkor lens. .
For the first time, here was a lens specifically designed to cover the smaller sensor area of the APS-C digital SLRs. .
Enter the Tokina AT-X Pro 12-24mm f/4.0 DX, the Tamron SP 11-18mm f/4.5-5.6 Di II, and the Sigma 10-20mm f/4.0-5.6 EX HSM. .
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
may ask why the Sigma 12-24mm was not included in this test. All reports are that the Sigma is a very fine lens, and it has the virtue of working on 35mm bodies at all focal lengths. .
THE TESTS
Chances are, if you want a lens this wide, you’re either shooting landscapes or photojournalism-style photography.
To level the playing field between cameras, we shot our test images in JPEG mode with sharpening set to medium-high in the camera. .
The test shots were then subjectively evaluated for center and edge sharpness, chromatic aberration, and light fall-off (vignetting). .
So here, alphabetically, are our individual reviews of each of these super-wide lenses, followed by our summary and conclusions..
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. .
For the first time, here was a lens specifically designed to cover the smaller sensor area of the APS-C digital SLRs. .
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
All reports are that the Sigma is a very fine lens, and it has the virtue of working on 35mm bodies at all focal lengths. .
THE TESTS
Chances are, if you want a lens this wide, you’re either shooting landscapes or photojournalism-style photography.
We also shot some images in RAW to evaluate post-processing techniques for removing vignetting and chromatic aberration. .
The test shots were then subjectively evaluated for center and edge sharpness, chromatic aberration, and light fall-off (vignetting). .
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
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