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Upgrade the memory of your 2018 Mac mini up to 64GB
Sony 12-24mm f/2.8 GM

NEW! Available for pre-order.

3 XA Elements, 2 Super ED elements, nano AR II and fluorine coatings, four focusing motors, dust and moisture sealed.

Sigma 12-24mm f/4 DG HSM Art Aperture Series: Sunlight on the Beaver Pond (Nikon D810)

Get Sigma 12-24mm f/4 DG HSM Art and Sigma DG HSM Art lenses at B&H Photo.

See my reviews of Sigma DG HSM Art lenses at 20mm, 24mm, 35mm, 50mm and more.

This aperture series from f/4 through f/11 shows how well the Sigma 12-24mm f/4 DG HSM Art handles flare into a direct intense light source along with bright clouds and deeply shadowed areas.

Sigma 12-24mm f/4 DG HSM Art

The ability to maintain contrast (minimize flare) is critical in such situations so that shadow areas can be opened up with detail, but not haze. It is particularly important with a camera like the Nikon D810 at ISO 64, because the camera has a tremendous dynamic range—the lens has to not limit that dynamic range (the Canon 5DS R would have been in trouble on this image)

Also treated here are field curvature and focus shift. The example is highly instructive and should prove very useful for anyone shooting the Sigma 12-24/4A.

In my review of the Sigma 12-24mm f/4 DG HSM Art in DAP:

Sigma 12-24mm f/4 DG HSM Art Aperture Series: Sunlight on the Beaver Pond

Includes images up to 28 megapixels along with many large crops, all from f/4 through f/11.

Especially at 36MP on up, the photographer must place focus wisely for the subject matter, not just the “1/3 in” rule and not even just the near/far relationships, but also anticipating and compensating for a lens with focus shift and field curvature, which requires special care based on the shooting aperture.

Sunlight on the Lundy Canyon Beaver Pond
f11 @ 1/125 sec, ISO 64; 2016-11-16 13:32:01
NIKON D810 + 12.0-24.0 mm f/4.0

[low-res image for bot]
Save Big $$$$ on Memory for 2019 Mac Pro

Up to 65% better pricing than Apple

Lloyd recommends 32GB RDIMM modules for most users (more expensive LRDIMMS are for 512GB or more).



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Pelican 1520NF Case without Foam (Silver)
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