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Last Updated: Thu Jul 14 11:51:52 UTC 2016


Sigma AF 400mm f/5.6 APO (1988-1995)
Annex A - D800 Test and Sample Images


In September, 2013, I was generously loaned a D800 for a week. During that time, I had the opportunity to perform several short test shoots with Sigma AF 400mm f/5.6 APO super-telephoto lens, with and without the Tamron-F 1.4XN MC4 teleconverter, both handheld, and using a SLIK LPIII monopod.

As the D800, until the release of the D7100 earlier in 2013, had the highest imaging photosite density of any DSLR, it is an excellent test platform, as 1:1 crops expose any deficiencies in sharpness and chromatic aberration performance of a lens.

While benchmarks for the D800 usually credit it with much better noise performance compared to
APS-C/DX format designs like the D90, this appears to be the result of normalising whole frames down to a common shared format, i.e. comparing noise in a full frame. Comparing 1:1 crops from the D90 and D800 suggests performance mostly reflects photosite size, similar for both sensors. Using similar exposure parameters as used with the D90 yielded very good results in the D800.

The inevitable conclusion from these test shoots is that the 1988 designed
Sigma AF 400mm f/5.6 APO super-telephoto lens performs superbly with the D800. With a 1.4 X teleconverter, the loss of performance, especially in chromatic aberration and vignetting, is more prominent than observed in the APS-C/DX format D90, but still tolerable, and digitally correctable.


Sigma AF 400mm f/5.6 APO  / Nikon D800



Focal Length: 400mm
Aperture: f/5.6 - f/8.0
ISO: Auto Nikon Control Law
Shutter:
Auto Nikon Control Law
Metadata: EXIF, IPTC
Notes: detail crops are 1:1 1024^2 pixels for comparison; highlight overexposure corrections with Aperture 3.
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Sigma AF 400mm f/5.6 APO / Tamron-F 1.4XN MC4 / Nikon D800



Focal Length: 560mm
Aperture: f/5.6 eq. f/8.0
ISO: Auto Nikon Control Law
Shutter:
Auto Nikon Control Law
Metadata: EXIF, IPTC
Notes: detail crops are 1:1 1024^2 pixels for comparison; highlight overexposure corrections with Aperture 3.

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Photos and text © 2013 Carlo Kopp; Photographs produced using a Nikon D800, and some using a Tamron-F 1.4XN MC4 Teleconverter; almost all images produced in acceptance test or validation shoots.

Note: If you wish to view EXIF metadata in the DSLR images, the simplest solution is the FxIF Firefox extension. Please note that the focal length and aperture settings in the EXIF data reflect the configuration of the lens, regardless of whether a teleconverter is attached. This is because the teleconverter passes digital messaging from the lens without decoding and regenerating it.

Photos and text © 2013 Carlo Kopp



Computer Science, Engineering and Systems Publications List Information Warfare, Hypergames, Systems Research Ad Hoc Networking Research Computer Architecture Research - Password Capability Systems Industry Publications Industry Hardware Design Projects Interesting Papers Photo Galleries Biography Email Carlo GOTO Home
Artwork and text ¿ 1994 - 2010 Carlo Kopp; All rights reserved.
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