LensTip.com

Lens review

Nikon Nikkor AF-S 85 mm f/1.4G

7 September 2010
Arkadiusz Olech

8. Vignetting

In the case of small sensors the vignetting of classic 85 mm devices is not a serious issue. The photos below, taken on the Nikon D200 show it very clearly; the measurements confirm it too. At the maximum relative aperture the light fall-off in the corners amounts to 25% (-0.84 EV) and by f/2.0 it decreases to an imperceptible level of 10%.

Nikon Nikkor AF-S 85 mm f/1.4G - Vignetting


The results of the Nikkor are typical for this class of equipment. As you see in the chart below, the 85 mm class lenses by f/1.4 and on the APS-C/DX class matrix have the vignetting level near 21-25%. On stopping down to f/2.0 this aberration decreases to 8-10%.


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Nikkor
AF-S 1.4/85
Canon
85 mm f/1.2L
Samyang
1.4/85
Zeiss
1.4/85
f/1.4
25%
23%
25%
21%
f/2.0
10%
9%
9%
8%
f/2.8
2%
2%
2%
2%


Full frame is quite another story, though. The photos taken on the Nikon D3x and presented below, show it well.

Nikon Nikkor AF-S 85 mm f/1.4G - Vignetting


The situation is not so rosy here. The Nikkor AF-S 85 mm f/1.4G at the maximum relative aperture loses as much as 48% of light in the frame corners (-1.9 EV). On stopping down to f/2.0 the vignetting amounts to 35% and by f/2.8 it decreases to 16%. Only by f/4.0 it becomes imperceptible, reaching just 5%.

Looking at the chart below you can see that the Nikkor doesn’t compare favourably with its rivals in this category . We can fully understand the fact that it lost out to the faster and more expensive Canon; also the defeat at the hands of the Sony, after all designed and made by the renowned Zeiss company, is nothing to be ashamed of. But losing to the Samyang, a device six times cheaper, should give us something to think about…


Nikkor
AF-S 1.4/85
Canon
85 mm f/1.2L
Samyang
1.4/85
Zeiss
1.4/85
f/1.4
48%
43%
38%
41%
f/2.0
35%
22%
22%
22%
f/2.8
16%
5%
13%
7%
f/4.0
5%
4%
8%
5%



Nikon Nikkor AF-S 85 mm f/1.4G - Vignetting