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Memory Upgrades for 2019 Mac Pro - Save Up to 65% vs Factory Costs
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).


Sigma 14-24mm F/2.8 DG DN Aperture Series @ 24mm: Teak Bench Closeup

This series from f/2.8 through f/11 evaluates the Sigma 14-24mm f/2.8 DG DN Art at 24mm for sharpness at close range as well as focus shift, bokeh and secondary color. Shot in pixel shift mode for absolute highest sharpness. As well, lens skew is demonstrated.

Sigma 14-24mm F/2.8 DG DN Aperture Series @ 24mm: Teak Bench Closeup

Includes images up to full camera resolution from f/2.8 through f/11.

I am excited about the about $1399 Sigma 14-24mm F/2.8 DG DN, but this sample clearly has a lens skew issue that shows up at both the wide end and the long end. I won’t be doing any more testing with it unless the 2nd sample is worse (2nd sample shows up on 5 days from now).

Optical designs can look great on the computer but real lenses have to be built, and production tolerances can make high performance designs that deliver the as-designed performance difficult to produce. Thus fantasy MTF charts often conflict with reality in a real lens. I plan on buying the about $1399 Sigma 14-24mm f/2.8 DG DN Art, and I will try a 3rd sample if necessary to get one that is top-grade as-built, or a 4th or a 5th—hopefully Sigma quality control is not that bad.

CLICK TO VIEW: Recommended Ultra Wide Lenses for Sony

f2.8 @ 1/13 sec pixel shift, ISO 100; 2019-09-03 19:23:01
Sony A7R III + Sigma 14-24mm f/2.8 DG DN Art @ 24mm RAW: LACA corrected
PSMS painted over with single shot for poppy at left

[low-res image for bot]

New Mac Pro?

Or iMac 5K or iMac Pro?
Consult with Lloyd ASAP before buying!


System configuration for CPU, GPU, memory, SSD, backup, RAID, optimizing performance, workflow.
For YOUR optimal workflow

Avoid costly mistakes in throwing money at the problem for less performance and/or buying the wrong machine for your own needs!

Remote screen sharing available for RAID, software configuration, etc.

More about 2019 Mac Pro vs iMac 5K vs iMac Pro...


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